Microscope Eyepiece Reticules (Graticules) 

G44 ASTM E45 Grain Sizing

Eyepiece Reticle to ASTM E45

Technical Specification

Pattern comprises 7.1mm square with features on left and right side to compare size, and a 10mm length horizontal scale. Root 2 sides. Also likely to be suitable for DIN 50602. For some applications a 10mm square is required, these can be made to special order.

Line Thickness
0.015mm +/-0.003mm

Glass Type and Thickness
Soda Lime 1.5mm thick

Scale Length Tolerance
+/-0.005mm

Diameter Tolerance
+0/-0.1mm

Divisional Marker Lengths
0.4mm, 0.2mm

Orientation
Correct reading through glass