https://trioptics.com/us/products/optitest-visual-measurement-instruments/
| Technical Data Autocollimators | |||||
| Type | Focal Length | Tube diameter | Clear Aperture |
Field
of View/ Measuring range |
Resolution
for reticle line width 10µm |
| ACM 100-38 | 100 mm | 38.1 mm | 30 mm | 6°/3° | 10 arcsec |
| ACM 150-38 | 150 mm | 38.1 mm | 30 mm | 4°/2° | 7 arcsec |
| ACM 200-38 | 200 mm | 38.1 mm | 30 mm | 3°/1.5° | 5 arcsec |
| ACM 300-38 | 300 mm | 38.1 mm | 30 mm | 2°/1° | 3.5 arcsec |
| ACM 300-57 | 300 mm | 57.15 mm | 50 mm | 2°/1° | 3.5 arcsec |
| ACM 500-57 | 500 mm | 57.15 mm | 50 mm | 1.2°/0.6° | 2 arcsec |
| ACM 1000-115 | 1000 mm | 115 mm | 100 mm | 0.6°/0.3° | 1 arcsec |
| ACM 1000-140 | 1000 mm | 140 mm | 125 mm | 0.6°/0.3° | 1 arcsec |
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