Refractive Index Liquid Series M 1.81 For Gempro Refractometer Gold & Platinum Stock Wire & Tubing Rubber thickness is 1/8" throughout

Rubber thickness is 1/8" throughout both formats

crafted from carbon steel in Switzerland

and true — consistently aligned

2mm clearance difference between each punch and its corresponding dap

Refractive Index Liquid Series M 1.81 For Gempro Refractometer Gold & Platinum Stock Wire & Tubing Rubber thickness is 1/8" throughoutRefractive Index Liquid Series M 1. 81 is formulated for use with the GemPro Refractometer to obtain accurate gemstone refractive index readings. This contact liquid creates the necessary optical interface between the stone and prism, ensuring clear shadow edges and reliable measurement results. Features Series M refractive index liquid rated at 1. 81 Designed for use with the GemPro Refractometer Provides proper optical contact between gemstone and