![](https://coimages.sciencemuseumgroup.org.uk/55/160/large_thumbnail_1937_0093.jpg)
Collimator for measuring flatness of surfaces
- Made:
- 1940
![Metro Collimator no](https://coimages.sciencemuseumgroup.org.uk/310/313/medium_smg00065726.jpg)
Metro Collimator no. 2, 1940 for measuring flatness of surfaces by optical means
Details
- Category:
- Industrial Metrology
- Object Number:
- 1983-393
- Materials:
- steel , brass & glass
- Measurements:
-
25 x 25 x 10 cm
- type:
- auto collimator
- credit:
- National Physical Laboratory.