ACM-1
Calibration Micrometer
This ideal standard provides accurate calibration of any eyepiece, reticules, filar micrometers, or electronic measuring instrument. Features a series of 'H' shaped fiducial images in a range of sizes from 0.1 mm through 20 mm, useful for calibration range from 1x to 1,000x power.
Specifications
| Standard Size |
25 mm x 75 mm |
| Substrate Type |
Transparent glass (G), 1.42 mm or thicker
Opal glass (O) is available per request |
| Image Forming Material |
Evaporated chromium on glass |
| Image Description |
'H' shaped fiducials as follows, centerline to centerline
| Pattern Length (mm) |
Pattern Height |
Line Width |
| 0.10, 0.25, 0.50, 0.75 |
0.50 mm |
10 µm |
| 1.00, 2.50, 5.00, 7.50 |
1.00 mm |
20 µm |
| 10.0, 15.0, 20.0 |
3.00 mm |
40 µm |
|
| Polarity |
Positive |
| Reading Direction |
Right Read Chrome Up (RRCU) |
| Image Placement Accuracy |
3.0 microns or better |
| Image Contrast/Density |
Chrome optical density grater than 2.0 |