Proportion grading graticule for XTS optics

Auxiliary eyepiece to replace one of those supplied as standard for general purposes. This eyepiece allows to grade the cut and the proportions of polished gemstones.

A very useful and cheap solution for cut grade analysis of gemstones, a convenient system using the microscope optics.

Key points:

• available only for 10X magnification
• only for XTS optics
• reticule with protractor and crosshair