The 316L stainless steel material is treated with heat, and the coeffi-cient of thermal expansion is small；440C stainless steel ball and sapphire gasket, wear resistant and small friction coefficient；Flexible spring plate and fixing screw to fix the optical element, low deformation.
| GWCH-ZJO-1.0-3 and GWCH-ZJD-1.0-2 install one-inch optical components； |
| GWCH-ZJO-0.5-3 and GWCH-ZJD-0.5-2 are equipped with half-inch optical components. |
