Microscope Eyepiece Reticules (Graticules) 

G55 ASTM E562 25 Point Square Grid

Eyepiece Reticle to ASTM E562. 5 X 5 Square Grid of Crosses.

Technical Specification

Line Thickness
0.015mm +/-0.003mm

Glass Type and Thickness
Soda Lime 1.5mm thick

Image Size
10mm

Diameter Tolerance
+0/-0.1mm

Cross Size and Pitch
0.4mm, 2.5mm Pitch

Orientation
Correct reading through glass