Microscope Eyepiece Reticules (Graticules) 

NE38 Ratio Squares 4, 7, 10mm

Eyepiece Reticle with 3 Squares 10mm, 7mm, 4mm. Area Ratio A:B is 1:3 and B:C is 1:2

Technical Specification

Line Thickness
0.010mm +/-0.003mm, 0.02mm +/-0.003mm, 0.030mm +/-0.003mm

Glass Type and Thickness
Soda Lime 1.5mm thick

Overall Tolerance
+/-0.010mm

Diameter Tolerance
+0/-0.1mm

Orientation
Correct reading through glass