Magnetic Spherical Steel Prism Holder
· 38.1mm/1.5inch Diameter
· 440C Stainless Steel Sphere
· Hardened Surface
· 0.002mm Roundness Error

High Precision Prism
· Silver Coated
· 1inch diameter
· 3arcsec beam deviation

· Absolute offset :-16.9mm

Black Prism Ring
· Non-removable

Magnetic Base
· Comes with Centering Pin