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Electron Microscopy Sciences

Illuminators, Magnifiers, Microscopes & Graticules

arrow14Eyepiece Graticules

The standard size of the eyepiece Graticle is 16,19, and 21 mm. All other sizes are available on request.

arrow12 A. SIZE AND POSITION SCALES

arrow12 Lines and Crosses

single lines Graticulearrow10 Single Lines - NE50

For measurement of large objects in conjunction with a graduated mechanical stage, and for alignment as well.

Pattern Description Dia Catalog Price  
NE50 Single Line, nominal width 0.02mm. Image covers entire field of view. Surface chrome image
16mm 67982-16 95.00 Add to Cart
  19mm 67982-19 95.00 Add to Cart
  21mm 67982-21 95.00 Add to Cart
cross lines graticulearrow10 Cross Lines - NE8, NE81, NE82

Used as NE50 but for measurements in two directions and for sighting and alignment. Image covers the entire field of view.

Pattern Description Dia Catalog Price  
NE8 Cross lines with surface chrome image. Nominal line width 0.020mm. 16mm 67983-01 95.00 Add to Cart
  19mm 67983-05 95.00 Add to Cart
  21mm 67983-10 95.00 Add to Cart
NE81 Cross lines with surface chrome image. Nominal line width 0.040mm. 16mm 67983-20 95.00 Add to Cart
  19mm 67983-25 95.00 Add to Cart
  21mm 67983-30 95.00 Add to Cart
NE82 Cross lines with surface chrome image. Nominal line width 0.005mm. 16mm 67984-16 95.00 Add to Cart
  19mm 67984-19 95.00 Add to Cart
  21mm 67984-21 95.00 Add to Cart
broken crosslines graticulearrow10 Broken Crosslines - NE56

Used as above. Broken lines enable fine detail to beseen at the breaks. A thin boundary would be lost behind a a continuous line.

Pattern Description Dia Catalog Price  
NE56 Broken cross lines. Image covers the entire field of view. Surface chrome image.
16mm 67985-16 95.00 Add to Cart
  19mm 67985-19 95.00 Add to Cart
  21mm 67985-21 95.00 Add to Cart
crossed gauge linesarrow10 Crossed Gauge Lines - NE53

Use as crossed lines, but for the measuring of distances between thelines. Greater accuracy can be obtained by locatng the specimen detail between the graticules gauge pair.

Pattern Description Dia Catalog Price  
NE53 Two vertical lines 0.1mm apart with horizontal line. Image covers the entire field of view. Surface chrome image.
16mm 67986-16 119.00 Add to Cart
  19mm 67986-19 119.00 Add to Cart
  21mm 67986-21 119.00 Add to Cart
NE54 Two vertical lines 0.2mm apart
16mm 67975-16 105.00 Add to Cart
  19mm 67975-19 105.00 Add to Cart
  21mm 67975-21 105.00 Add to Cart
    Custom 67975-50 205.00 Add to Cart
horizontal & vertical scalesarrow10 Horizontal & Vertical Scales - NE1, NE2, NE5, NE20, NE28, NE31, NE41, NE120

These scales are used for the measuring of lengths of specimen or distances between points on a variety of different shaped objects. NE1scale showed: This eyepiece graticule has an overall length of 10.00mm with 100 subdivisions of 0.1mm. When used with a x10 objective each division will represent 10 microns on the specimen. By dividing the division of the chosen graticule by the magnification of the objective one obtains an approximate value that each division will represent on the stage.

Pattern Description Dia Catalog Price  
NE1 Horizontal micrometer scale 10mm long with 0.1mm subdivions. Surface chrome image. 16mm 68010-16 92.00 Add to Cart
  19mm 68010-19 92.00 Add to Cart
  21mm 68010-21 92.00 Add to Cart
NE2 Vertical micrometer scale 10mm long with 0.1mm subdivions. Surface chrome image. 16mm 68006-16 112.00 Add to Cart
  19mm 68006-19 112.00 Add to Cart
  21mm 68006-21 112.00 Add to Cart
NE5 Horizontal micrometer scale 5mm long with 0.05mm subdivisions. Surface chrome image. 16mm 67988-16 109.00 Add to Cart
  19mm 67988-19 109.00 Add to Cart
  21mm 67988-21 109.00 Add to Cart
NE20 Horizontal scale 0.1 inch long with 100 subdivions. Surface scale image. 16mm 67987-16 109.00 Add to Cart
  19mm 67987-19 109.00 Add to Cart
  21mm 67987-21 109.00 Add to Cart
NE28 Horizontal micrometer scale. 1mm long with 100 subdivisions. Surface chrome image. 16mm 67992-16 119.00 Add to Cart
  19mm 67992-19 119.00 Add to Cart
  21mm 67992-21 119.00 Add to Cart
NE31 Horizontal scale 0.5” long with 100 divisions of 0.0005” 16mm 67977-16 101.00 Add to Cart
  19mm 67977-19 101.00 Add to Cart
  21mm 67977-21 101.00 Add to Cart
  Custom 67977-50 204.00 Add to Cart
NE41 Horizontal micrometer scale 10mm long with 200 subdivisions. Surface chrome image. 16mm 67993-16 112.00 Add to Cart
  19mm 67993-19 112.00 Add to Cart
  21mm 67993-21 112.00 Add to Cart
NE120 Horizontal Micrometer 20mm long with 100 , divisions of 0.1mm 16mm 67976-16 82.00 Add to Cart
  19mm 67976-19 82.00 Add to Cart
  21mm 67976-21 82.00 Add to Cart
  Custom 67976-50 205.00 Add to Cart
crossed scales graticulearrow10 Crossed -NE17, NE18, NE70, NE72

Used as a horizontal and a vertical scale, they are especially useful when interested in measurement in different axis.

Pattern Description Dia Catalog Price  
NE17 Crossed micrometer scales 10mm long with 0.1mm subdivions. Surface chrome image. 16mm 67989-16 119.00 Add to Cart
  19mm 67989-19 119.00 Add to Cart
  21mm 67989-21 119.00 Add to Cart
NE18 Crossed micrometer scales 5mm long with 0.05mm subdivions. Surface chrome image. 16mm 67994-16 119.00 Add to Cart
  19mm 67994-19 119.00 Add to Cart
  21mm 67994-21 119.00 Add to Cart
NE72 Crossed Micrometer scale, each 20mm long with 200 Divisions of 0.1mm. 23mm 67978-23 101.00 Add to Cart
24mm 67978-24 203.00 Add to Cart
26mm 67978-26 145.00 Add to Cart
27mm 67978-27 145.00 Add to Cart
Custom 67978-50 181.00 Add to Cart
NE70 Crossed Micrometer scale (imperial), each 0.8' long with 400 Divisions of 0.002". 21mm 67978-21 99.00 Add to Cart
23mm 67979-23 181.00 Add to Cart
24mm 67979-24 145.00 Add to Cart
26mm 67979-26 145.00 Add to Cart
27mm 67979-27 145.00 Add to Cart
scales with crosslinesarrow10 Scales with Crosslines - NE7, NE77, NE777

Used as a horizontal and a vertical scale, they are especially useful when interested in measurement in different axis.

Pattern Description Dia Catalog Price  
NE7 Horizontal micrometer scale 10mm long with crosslines at 0.1mm spacing. Surface chrome image. 16mm 68013-16 112.00 Add to Cart
  19mm 68013-19 112.00 Add to Cart
  21mm 68013-21 112.00 Add to Cart
NE77 Horizontal micrometer scale 5mm long in 100 divisions with crosslines. Surface chrome image. 16mm 68012-16 112.00 Add to Cart
  19mm 68012-19 112.00 Add to Cart
  21mm 68012-21 112.00 Add to Cart
NE777 Horizontal micrometer scale 0.5” long with divisions of 0.005” and crosslines 16mm 67980-16 105.00 Add to Cart
19mm 67980-19 105.00 Add to Cart
21mm 67980-21 105.00 Add to Cart
Custom 67980-50 213.00 Add to Cart

arrow12 Squares and Grids

Note: These scales may need to be calibrated, according to intended use. There are a number of uses for the grids and squares listed and they will largely depend on the individual user's application.

EYEPIECE SCALES:

  • Sectoring: A squared graticule might be used for the systematic examination of a specimen. Some of the squared patterns are numbered to aid in the identification of areas of interest. Sectioning is particularly useful for making drawings of specimens onto graph paper. The chess-board type of pattern helps the user to distinguish the position being examined: the darker squares are translucent, while the lighter ones are transparent, avoiding eyestrain in prolonged counting as many be necessary in hematology. These patterns provide the same advantages when used with image analysis and capture devices.
  • Counting: A squared graticule can be used for counting. Here the basic principle is that a small area of the specimen is analyzed in order to obtain information about the total area. This minimizes wasteful work enabling simple analysis of a paricular area. An example of this would be the comparison of large to small particles in a specimen. By using the Miller craticule (NE57) only the smaller particules in the small square are counted, the result being multiplied by ten for comparison with the number of larger particles in the large square.
  • Squared Grids: Squared grids can be used in particle size analysis as simple technical aids where sophisticated image analysis systems are not required. The areas of the particles to be measured can be estimated by simply counting the number of squares occupied by those particles. It is necessary to estimate fractions of a square or make a rule (e.g. count as a square all partly covered squares at the right and bottom sides of the grid, and ignore partly covered squares at the left and upper sides of the squares). This method would only be useful for a fairly crude estimation of a large diameter.
squared grids graticulearrow10 Squared Grids - NE10, NE11, NE34

Simple grids are convenient for making sketches of the obseved speimen on graph paper. They are also useful for particle counting.

Pattern Description Dia Catalog Price  
NE10 Grid (net) 0.5mm pitch. Surface chrome image. (Pitch: distance of center bar to center bar) 16mm 68011-16 112.00 Add to Cart
  19mm 68011-19 112.00 Add to Cart
  21mm 68011-21 112.00 Add to Cart
NE11 Grid (net) 1.00mm pitch. Surface chrome image. (Pitch: distance of center bar to center bar) 16mm 68015-16 112.00 Add to Cart
  19mm 68015-19 112.00 Add to Cart
  21mm 68015-21 112.00 Add to Cart
NE34 Grid (net) 0.1mm squares. Surface chrome image. 16mm 68018-16 119.00 Add to Cart
  19mm 68018-19 119.00 Add to Cart
  21mm 68018-21 119.00 Add to Cart
indexed gridsarrow10 Indexed Grids - NE10A, NE11A, NE34A, NE71

Useful for particle counting, particularly when reference is needed between workers. Also, they are useful for area of specimen determinations.

Pattern Description Dia Catalog Price  
NE10A Numbered grid5mm x 5mm. 0.5mm pitch. Marked 1-10 and A-J. Surface chrome image. 16mm 68011-16A 112.00 Add to Cart
  19mm 68011-19A 112.00 Add to Cart
  21mm 68011-21A 112.00 Add to Cart
NE11A Numbered grid 10mm x 10mm. 1.0mm pitch. Marked 1-10 and A-J. Surface chrome image. 16mm 68016-16 92.00 Add to Cart
  19mm 68016-19 92.00 Add to Cart
  21mm 68016-21 92.00 Add to Cart
NE34A Numbered grid 1mm x 1mm. 0.1mm pitch. Marked 1-10 and A-J. Surface chrome image. 16mm 68018-16A 119.00 Add to Cart
  19mm 68018-19A 119.00 Add to Cart
  21mm 68018-21A 119.00 Add to Cart
NE71 Index Pattern 20x20 Grid of 0.5mm squares 21mm 67981-21 105.00 Add to Cart
23mm 67981-23 105.00 Add to Cart
24mm 67981-24 145.00 Add to Cart
26mm 67981-26 145.00 Add to Cart
Custom 67981-50 181.00 Add to Cart
index gridsarrow10 Indexed Grids - NE35

Useful for area of specimen determinations, especially rectangular shapes, also for particle counting.

Pattern Description Dia Catalog Price  
NE35 Numbered grid 10mm x 10mm. 1mm indexed squares. Surface chrome image. 16mm 68014-16 119.00 Add to Cart
  19mm 68014-19 119.00 Add to Cart
  21mm 68014-21 119.00 Add to Cart
chessboard squaresarrow10 Chessboard Squares - NE15

The dark squares are translucent. Used as an alternative to simple grids for area of specimen determination and paricle counting. Alternative light and dark squares help to reduce eyestrain.

Pattern Description Dia Catalog Price  
NE15 Chessboard (net) 2.0mm squares. Surface chrome image. 16mm 68008-16 238.00 Add to Cart
  19mm 68008-19 238.00 Add to Cart
  21mm 68008-21 238.00 Add to Cart
squaresarrow10 Squares - NE38

Combines three areas in one for convenience, giving area ratios A:B of 1:3 and B:C of 1:2.

Pattern Description Dia Catalog Price  
NE38 Squares 10mm, 7mm & 4mm. Glass sandwich. 16mm 68017-16 119.00 Add to Cart
  19mm 68017-19 119.00 Add to Cart
  21mm 68017-21 119.00 Add to Cart
miller squaresarrow10 Miller Squares - NE57

The ratio of large to small squares is 9:1. Originally designed for hematology, they can be utilized for rapid counting of any evenly spread field of particle.

References:
1. American J. of Clin. Pathol. Vol.20, 1950, page 1079. “Time Saving Device For Counting Reticulocyte.” G.Brescher and Schneiderman.
2. Practicle Haemotology – J.D. Dacy. Published by J.A. Churchill. 2nd Edition 1956 page 25.

Pattern Description Dia Catalog Price  
NE57 Miller 7x7mm grid. Glass sandwich. 16mm 68020-16 119.00 Add to Cart
  19mm 68020-19 119.00 Add to Cart
  21mm 68020-21 119.00 Add to Cart
whipple gridarrow10 Whipple Grid - NE29

Originally designed for water particle analysis, but may be used for other aspects of particle counting. Grid showed: Ratio of full square to smallest is 50:1. Area is 2500:1.

Reference: Microscopy of Drinking Water.

Pattern Description Dia Catalog Price  
NE29 Whipple grid 100 squares in 7mm area. Surface chrome image. 16mm 68009-16 119.00 Add to Cart
  19mm 68009-19 119.00 Add to Cart
  21mm 68009-21 119.00 Add to Cart

arrow12 Gauges

concentric circlesarrow10 Concentric Circles - NE43, NE43, NE44, NE47

Can be used for two-way measurement when calibrated as a micrometer.

Pattern Description Dia Catalog Price  
NE42 Concentric circle 0.25mm - 2.5mm diameter. 10 circles. Surface chrome image. 16mm 68019-16 119.00 Add to Cart
  19mm 68019-19 119.00 Add to Cart
  21mm 68019-21 119.00 Add to Cart
NE43 Concentric circle 0.5mm - 5mm diameter. 10 circles. Surface chrome image. 16mm 67997-16 119.00 Add to Cart
  19mm 67997-19 119.00 Add to Cart
  21mm 67997-21 119.00 Add to Cart
NE44 Concentric circle 1mm - 10mm diameter. 10 circles. Surface chrome image. 16mm 67998-16 119.00 Add to Cart
  19mm 67998-19 119.00 Add to Cart
  21mm 67998-21 119.00 Add to Cart
NE47 Concentric circle 2mm - 20mm diameter. 10 circles. Surface chrome image. 16mm 67999-16 119.00 Add to Cart
  19mm 67999-19 119.00 Add to Cart
  21mm 67999-21 119.00 Add to Cart

Concentric Circles and Cross Scales, NE48arrow12Concentric Circles and Cross Scales, NE48

Pattern Description Dia Catalog Price  
NE48 Concentric circles, 10 circles 1mm-10mm, with Graduated cross hairs 16mm 67991-16 109.00 Add to Cart
19mm 67991-19 109.00 Add to Cart
21mm 67991-21 109.00 Add to Cart
23mm 67991-23 109.00 Add to Cart
Custom 67991-50 225.00 Add to Cart
concentric circlearrow10 Concentric Circle - NE22

This design leaves the circle clear of obstruction. In addition the intermediate lines are broken to improve
ease of reading.

Pattern Description Dia Catalog Price  
NE22 Concentric circle 0.5mm - 12mm diameter. 24 circles. Surface chrome image. 16mm 68000-16 119.00 Add to Cart
  19mm 68000-19 119.00 Add to Cart
  21mm 68000-21 119.00 Add to Cart
gauge pairsarrow10 Gauge Pairs - NE19

Gauge pairs occupying a field of view of 10mm. Each gauge is proportional to its adjacent number. The
approximately size of the smallest pair = 0.1mm.

Pattern Description Dia Catalog Price  
NE19 Gauge pairs. Surface chrome image. 16mm 68001-16 112.00 Add to Cart
  19mm 68001-19 112.00 Add to Cart
  21mm 68001-21 112.00 Add to Cart
full protractorarrow10 Full Protractor - NE45
Pattern Description Dia Catalog Price  
NE45 Full protractor scale 10mm diameter dividedin degrees. Surface chrome image. 16mm 68002-16 119.00 Add to Cart
  19mm 68002-19 119.00 Add to Cart
  21mm 68002-21 119.00 Add to Cart

arrow12 PARTICLE SIZING AND DISTRIBUTING

The use of the eyepiece graticules showed in this section make it possible to analyze specimens containing particles as an alternative, or in addition to, sieving. Graticules for particle size analysis are particularly popular when there are only limited quantities of particles or where particles are smaller than 50 microns in diameter. Typical substances analyzed are sand grains, soil particles, plant seeds, fertilizers, abrasives, liquid droplets, pigments, pulverized coal, silica, fibers and fine dust.
The basic principle employed is to compare particles to the globes and circles of varying sizes that appear on the graticule – dark particles being compared to solids globes, and light or transparent ones to the circles. Naturally the procedure varies with the graticule concerned, more information about which is given below.
Please note that for calibration the circles and globes will represent particles smaller in diameter by the magnification of the objective.

paterson globes and circlesarrow10 Paterson Globes and Circles - NG1
Pattern Description Dia Catalog Price  
NG1 Paterson globes/circles. Surface chrome image. 16mm 68031-16 230.00 Add to Cart
  19mm 68031-19 230.00 Add to Cart
  21mm 68031-21 230.00 Add to Cart
portonarrow10 Porton - NG2

The circle areas of the Porton greaticules increases with Root 2 progression as do the divisions on the right hand side of the rectangle. These divisions are numbered for convenience. The rectangle size is 4.5mm x .25mm. Circle sizes in microns are 560, 400, 280, 200, 140, 100, 70, 50, and 35. The specimen is racked on the mechanical stage of the microscope and traverses are taken right across thee deposit sizing all the particles encountered.

Pattern Description Dia Catalog Price  
NG2 Original Porton globes/circles. Surface chrome image. 16mm 68024-16 238.00 Add to Cart
  19mm 68024-19 238.00 Add to Cart
  21mm 68024-21 238.00 Add to Cart
new portonarrow10 New Porton - NG12

The NG12 is particularly useful since the array of globes and circles are conveniently close to where the particles pass. At the end of each band of the sample the mechanical stage is traversed vertically to take in the next band until the whole sample has been covered.

Pattern Description Dia Catalog Price  
NG12 Modified Porton pattern globes/circles. Surface chrome image. 16mm 68032-16 230.00 Add to Cart
  19mm 68032-19 230.00 Add to Cart
  21mm 68032-21 230.00 Add to Cart
British Standard Graticulearrow10 British Standard Graticule - NG10

In this graticule the circle areas double progressively, hence the diameters alter by Root 2, so that the size classes can form a continuation of the standard series of sieves for particle sizing. Each particle is assigned to a size class defined by two adjacent circles, which represent the size limits of that class. Thus the distribution of size is obtained in terms of the diameter of circles having the same projected area as the particles. This method will cover particles in the range 150 micron to 0.38 micron. The size distributions with respect to their number and weight are determined separately. Final results are calculated as cumulative percents.
Originally designed by the National Coal Board for use in coal mining.

Pattern Description Dia Catalog Price  
NG10 British Standard (BS3625/BS3260) Globes & Circles. Surface chrome image. 16mm 68026-16 232.00 Add to Cart
  19mm 68026-19 232.00 Add to Cart
  21mm 68026-21 232.00 Add to Cart
fairsarrow10 Fairs - NG5

Designed to extend the sizing range of globe and circle graticules.
Example: Used in conjunction with NG2 the overall size range = 128:1. The circles increase by 2.
Note: Both graticules would have to be used with the same microscope, eyepiece and objective.

Pattern Description Dia Catalog Price  
NG5 Fairs. Grid length 4mm. Glass Sandwich. 16mm 68033-16 230.00 Add to Cart
  19mm 68033-19 230.00 Add to Cart
  21mm 68033-21 230.00 Add to Cart

arrow10 Asbestos Fiber Analysis

walton and beckett graticule for abestosarrow10 Walton and Beckett Graticule for Asbestos - G22, G24

Calibration factors are required for each of these graticules. See note below.
The Walton and Beckett graticule is used for counting fibrous dust (e.g. asbestos or glass fibers) and is particularly useful where the majority of fibers to be counted are shorter than 5 microns. The circle is divided into four by two diametrical lines scaled in units of 5 and 3 microns respectively. 3 and 5 microns are the critical measurements of fiber lengths and diameters used in fiber counting. Unlike the usual globes of other particle graticules, the Walton and Beckett have a series of shapes to compare objects with. These shapes have been designed for comparison with fibers, especially since they incorporate an aspect ratio of 3:1 or 5:1 essential for such analysis.

IMPORTANT NOTE: The circle on these Walton & Beckett graticules must represent 100 microns at the stage and each one must be manufactured to suit the individual instrument.

Therefore, details should be provided with your order of:

  1. Calibration factor, if known;
  2. Objective magnification;
  3. Eyepiece magnification;
  4. Diameter of graticule disc required;
  5. Microscope make and model.
Pattern Description Dia Catalog Price  
G22 Walton & Beckett for asbestos. 3:1 ratio. Glass sandwich. 16mm 68028-16 270.00 Add to Cart
  19mm 68028-19 270.00 Add to Cart
  21mm 68028-21 270.00 Add to Cart
G24 Walton & Beckett for asbestos. 5:1 ratio. Glass sandwich. 16mm 68029-16 270.00 Add to Cart
  19mm 68029-19 270.00 Add to Cart
  21mm 68029-21 270.00 Add to Cart
G25 Based on the G22, the G25 is produced by the Institute of Occupational Health. 16mm 68030-16 270.00 Add to Cart
  19mm 68030-19 270.00 Add to Cart
  21mm 68030-21 270.00 Add to Cart

arrow10 Specialist Designs

Spray Droplet Siz­­­ing Reticle (Matthews), NG 30arrow12Spray Droplet Sizing Reticle (Matthews), NG 30

For size and distribution assessments of aersol droplets. Used in conjunction with a 40X Microscope for direct measurements of droplets from 50-400 micron diameters. The actual pattern sizes are 50, 100, 200, and 400 microns. W.H.O. (Details on Request) and G.A. Matthews. Imperial College.

NG30 Matthews Spray Droplet 16mm 68003-16 each 244.00 Add to Cart
19mm 68003-19 each 244.00 Add to Cart
21mm 68003-21 each 244.00 Add to Cart
23mm 68003-23 each 244.00 Add to Cart
Custom 68003-50 each 310.00 Add to Cart
thompsonarrow10 Thompson - G23

For counting particles in any of three areas of known size. The graticule is calibrated in the same manner as a normal eyepiece scale. The result is then used to calculate the area of any square.

Pattern Description Dia Catalog Price  
G23 Thompson for dut analysis 10mm, 7mm and 4mm squares. Glass Sandwich. 16mm 68090-16 295.00 Add to Cart
  19mm 68090-19 295.00 Add to Cart
  21mm 68090-21 295.00 Add to Cart
chalkley point arrayarrow10 Chalkley Point Array - NG52

This is used to quickly determine the relationship of components to each other using random sampling. Curtis gives an example of its application, where a researcher may want to see whether or not a certain drug affects the volume proportion of cell types in a given organ. With this graticule the proportion of points lying over the image of one type of component is statistically proportional to the area occupied by that component. The 25 points of the array are placed over the field of view at random, so that a comparison can be made between the number of points touching the one type of component, with number touching the other type of component in each viewing. A series of observations will yield an increasingly accurate ratio of the comparative incidence of each type of particle.

Reference: A.S.C. Curtis. Medical and Biological Illustration, Vol. 10. pp 261-266. “Area and Volume Measurements by Random Sampling Methods.”

Pattern Description Dia Catalog Price  
NG52 Chalkley point array. Surface chrome image. 16mm 68034-16 244.00 Add to Cart
  19mm 68034-19 244.00 Add to Cart
  21mm 68034-21 244.00 Add to Cart
pharmaceutical psa patternarrow10 Pharmaceutical PSA Pattern - G57

This graticule was designed for the pharmaceutical industry. However, it is also useful where particle size considerations are restricted to 10mm and 25mm. Dots and circles give quick references for these two sizes. In addition a scale is incorporated.

The microscope must be calibrated when ordering this graticule, such that the circle must equate to 1mm on the microscope stage.

Reference: The United State Pharmaceutical Conventions Inc. Pharmaceutical Forum Vol. 19 No 6.

Pattern Description Dia Catalog Price  
G57 Pharmaceutical PSA Pattern. Glass Sandwich 19mm 68091-19 295.00 Add to Cart
  21mm 68091-21 295.00 Add to Cart
counting patternarrow10 Counting Pattern - NG14

Simple counting for geological and soil analysis.

Reference: L.G. Briarty. “Stereology: Methods for Quantitative Light and Electron Microscopy.” Sci. Prog. Oxf. 1975 62; 1-32.

Pattern Description Dia Catalog Price  
NG14 Counting pattern for soil analysis, 10mm square. Surface chrome image. 16mm 68092-16 235.00 Add to Cart
  19mm 68092-19 235.00 Add to Cart
  21mm 68092-21 235.00 Add to Cart
Lennox Grain Analysis, NG21arrow12Lennox Grain Analysis, NG21
NG21 Lennox for Grain analysis  16mm 68004-16 each 253.00 Add to Cart
19mm 68004-19 each 253.00 Add to Cart
21mm 68004-21 each 253.00 Add to Cart
23mm 68004-23 each 253.00 Add to Cart
Custom 68004-50 each 335.00 Add to Cart

 

zeiss integrating disc or henning resseau patternarrow12Zeiss Integrating Disc 1 or Henning Reseau Pattern 25 Points – G49

Reference: Zeiss Werkzeitschrft. No 30, page 80

G49 Henning Resseau pattern (Zeiss integrating disc 1). Glass sandwich 16mm 68093-16 each 268.00 Add to Cart
19mm 68093-19 each 268.00 Add to Cart
21mm 68093-21 each 268.00 Add to Cart
Zeiss Integrating Disc arrow12Zeiss Integrating Eyepiece Disc 100 Points – G47

Similar to G49 but extended to 100 points, which are indexed.

G47 Zeiss integrating eyepiece disc. Glass sandwich. 16mm 68094-16 each 278.00 Add to Cart
19mm 68094-19 each 278.00 Add to Cart
21mm 68094-21 each 278.00 Add to Cart

arrow12 C. STEREOLOGY

In this simplest form, sterology is the science where information about a three dimensional object is obtained from only a two-dimensional section of that structure.

Measurements are usually made with these graticules in the following manner:

  1. An adequare representation of sections of a specimen is obtained.
  2. The graticule is superimposed upon the specimen (or micrograph/projected image of the section).
  3. Finally, the interaction between the superimposed graticule and teh test sections are recorded
    An overall introduction is given by: L.B. Brianrty. "Stereology: Methods for Quantitative Light and Electron Microscopy."
mertz graticulearrow10 The Mertz Graticule (36 Points) - NGM1

Used to estimate the three-dimensional surface areas or the surface density of a component in a given volume, when the component does not have a random orientation. It comprises a test system with parallel curved lines used for measuring the intersection of points.

Reference: W.A. Mertz. “Mikroskopic” Vol. 22 1967 pp 132-142.

Pattern Description Dia Catalog Price  
NGM1 Mertz for Stereology. Surface chrome image. 16mm 68035-16 244.00 Add to Cart
  19mm 68035-19 244.00 Add to Cart
  21mm 68035-21 244.00 Add to Cart
weibel 1arrow10 Weibel 1 - NGW1

Consists of 15 lines of equal length connecting the verticals of a regular hexagonal point network.

Reference: E.R.Weibel Lab. Invest. Vol. 22 pp 131-152. “Principal and Methods for the Morphometric Study of the Lung and other Organs.”

Pattern Description Dia Catalog Price  
NGW1 Weibel Type 1 for Stereology 16mm 68022-16 244.00 Add to Cart
  19mm 68022-19 244.00 Add to Cart
  21mm 68022-21 244.00 Add to Cart
weibel 2arrow10 Weibel 2 - NGW2

Used when making a surface to volume ratio of a structure per mass unit. This graticule consists of a number of short lines with interruptions as long as the lines. Basically, the number of intersections falling over the short lines is counted and the number of endpoints falling on the end of the structure is determined.

Reference: E.R. Weibel, Journal of Microscopy Vol. 95. pp 373-378. Current Capabilities and Limitations of Available Sterrological Technique, point counting method.

Pattern Description Dia Catalog Price  
NGW2 Weibel Type 2 for Stereology. Surface chrome image. 16mm 68025-16 244.00 Add to Cart
  19mm 68025-19 244.00 Add to Cart
  21mm 68025-21 244.00 Add to Cart
weibel 3arrow10 Weibel 3 - GW3

Reference: E.R. Weibel, G.S. Kishtler & W.F. Scherle. 1986. J. Cell Biology.30, 23.

Pattern Description Dia Catalog Price  
NGW3 Mertz for Stereology. Surface chrome image. 16mm 68023-16 244.00 Add to Cart
  19mm 68023-19 244.00 Add to Cart
  21mm 68023-21 244.00 Add to Cart

arrow12 D. METALLURGY

Standard pattern discs for metallurgical stereometric analysis of grain size in polished metal sections.

Grain Sizing Pattern EN10247/ISO4976arrow12Grain Sizing Pattern EN10247/ISO4976

For the determination of non-metallic inclusion content of steel

NG60 meets EN 10247 and NG61 Meets ISO 4976. Both are scaled for use eith 10x objective magnification Pattern

NG60 Grain Sizing reticle to En 10247 21mm 68007-21 each 244.00 Add to Cart
23mm 68007-23 each 244.00 Add to Cart
24mm 68007-24 each 288.00 Add to Cart
26mm 68007-26 each 288.00 Add to Cart
Custom 68007-50 each 315.00 Add to Cart
NG61 Grain Sizing reticle to ISO 4967 21mm 68036-21 each 244.00 Add to Cart
23mm 68036-23 each 244.00 Add to Cart
24mm 68036-24 each 288.00 Add to Cart
26mm 68036-26 each 288.00 Add to Cart
Custom 68036-50 each 315.00 Add to Cart
astm austenite grain sizing discarrow10 ASTM Austenite 1:1 Grain Sizing Disc - G41
Pattern Description Dia Catalog Price  
G41 ASTM Grain Size austenite. Glass sandwich. 19mm 68065-19 266.00 Add to Cart
  21mm 68065-21 266.00 Add to Cart
astm e112 plate 1 grain sizing discarrow10 ASTM E112 Plate 1 Grain Sizing Disc - G42
Pattern Description Dia Catalog Price  
G42 Grain sizing (E112). Glass Sandwich. 19mm 68066-19 283.00 Add to Cart
  21mm 68066-21 283.00 Add to Cart
astm carbide grain sizing chartarrow10 ASTM Carbide Grain Sizing Chart - G43
Pattern Description Dia Catalog Price  
G43 ASTM Grain Sizing carbide. Glass sandwich. 19mm 68067-19 283.00 Add to Cart
  21mm 68067-21 283.00 Add to Cart
astm e45arrow10 ASTM E45 - G44

Reference: ASTM E45

Pattern Description Dia Catalog Price  
G44 ASTM E45. Root 2 sides. 7.1mm square. 10mm scale. 19mm 68068-19 283.00 Add to Cart
  21mm 68068-21 283.00 Add to Cart
astm e19-46 grain sizing discarrow10 ASTM E19-46 Grain Sizing Disc - G45
Pattern Description Dia Catalog Price  
G45 ASTM Grain Sizing E19-46. Glass sandwich. 19mm 68069-19 283.00 Add to Cart
  21mm 68069-21 283.00 Add to Cart
astm e19-46 grain sizing disc root 2arrow10 ASTM E19-46 Grain Sizing Disc Root 2 - G46
Pattern Description Dia Catalog Price  
G46 ASTM Grain sizing E19-46 Root 2. Glass sanwich. 19mm 68070-19 283.00 Add to Cart
  21mm 68070-21 283.00 Add to Cart
Integrating EyePiece, G50arrow12 Integrating EyePiece, G50
G50 Integrated EyePiece (Simplified) 19mm 68005-19 240.00 Add to Cart
21mm 68005-21 240.00 Add to Cart
23mm 68005-23 253.00 Add to Cart
24mm 68005-24 280.00 Add to Cart
Custom 68005-50 335.00 Add to Cart
circular grid astm 24 pointsarrow10 Circular Grid ASTM 24 Points - G54

Reference: ASTM G562

Pattern Description Dia Catalog Price  
G54 ASTM 24 Point Circular Grid. Glass sandwich. 16mm 68084-16 283.00 Add to Cart
  19mm 68084-19 283.00 Add to Cart
  21mm 68084-21 283.00 Add to Cart
square grid astm 25 pointsarrow10 Square Grid ASTM 25 Points - G55

Reference: ASTM G562

Pattern Description Dia Catalog Price  
G55 ASTM 25 Point Square Grid. Glass sandwich. 16mm 68085-16 283.00 Add to Cart
  19mm 68085-19 283.00 Add to Cart
  21mm 68085-21 283.00 Add to Cart

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