surveying prism

Surveying Prism

1) Material : BK7 grade A, or other optical glass

2) Diameter tolerance: +0.0/-0.1mm

3) Angle tolerance: 90°×3=±0.5 Integral tolerance 5''-3'

4) Surface quality: 60/40, 40/20

5) Flatness: λ/2 per inch at 633nm

6) Bevel: 0.1-0.5mm

7) Clear aperture:>80% The above parameters are only for some optics' reference basis.

Concrete specifications will be different according to different materials, dimensions and customers request. Lower Price for lower precision is available. We can also manufacture according the drawings of customers.