Optical flats comes with diameters of 25, 50, 75 &100mm. Thickness of 8, 12, 18 &25mm. Accuracy of 0.1 ?. The specimen sets includes Convex of Dia. 50mm, & Thickness 12mm.Concave of Dia. 50mm & Thickness 12mm.Cylindrical of Dia. 50mm & Thickness 12mm.Tourf / Valley of Dia. 50mm & Thickness 12mm. Steel Master of Dia. 50mm & Thickness 16mm. Optical Flat of Dia. 50mm & Thickness 12mm. This set is provided in fabricated and powder coated box. |