- Fixed standard checks autocollimator calibration
- Dependable permanent stability - no moving parts
- Designed to deviate azimuth or elevation angle
- Certification of accuracy traceable to NIST
Just two steps are necessary after your mirror and autocollimator are established along an axis parallel to the work surface:
1.Interpose the D-623 Calibration Wedge between the mirror and the instrument in the line of sight.
2.Observe the angular deviation indicated by the autocollimator - which should be identical to the calibrated angle of the wedge.
The Model D-623 wedge is a fixed standard and therefore permanently stable. Because Model D-623 has no moving parts, accuracy is constant. The Model D-623 may be interposed in the line of sight to perform its angular deviation function for both azimuth and elevation. Since it is a fixed angle wedge, angles must be specified by the buyer at the time of order. Nominal deviations available include: 5", 10", 15", 20", 30" and 60". Actual measured deviation is noted on the housing.