Microscope Eyepiece Reticules (Graticules) 

G41 ASTM Grain Sizing Austenite

Eyepiece Reticle for Grain Sizing Austenite

Technical Specification

Image Diameter
15.5mm

Glass Type and Thickness
Soda Lime 1.5mm thick

Diameter Tolerance
+0/-0.1mm

Orientation
Correct reading through glass