Wild Heerbrugg plane surface tester
Wild Heerbrugg plane surface testing instrument
Obtained from the US
This is a collimator used for testing plane surfaces. It originally comes with a straight angle mirror that is unfortunately missing. It can however be used with any mirror. The instrument was used to test if a surface was plane or not. This can be done by setting up the instrument and using the light to project a 'cross' onto a mirror. The collimator ensures the light becomes parallel on output and gets focused again upon reflection. If the mirror is not exactly at straight angles the returning image is moved up / down. By adjusting the instrument the difference can be accurately measured.
Other collections
plane surface
Data sheet
- Type of use
- Survey
- Size instrument (l x w x h) in m
- 0.10 x 0.07 x 0.08
0.23 x 0.06 x 0.16
0.24 x 0.06 x 0.15 (tester) - weight instrument in kg
- 3.3
- Size case (l x w x h) in m
- 0.39 x 0.15 x 0.19
- weight case & in kg
- 7.2
- country obtained from
- Italy
United States
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Wild Heerbrugg plane surface testing instrument
Obtained from the US