Reticle Grid 0.5mm Squares 1,600 Total Labeled

KR-454 glass eyepiece reticle. Grid 20mm x 20mm. 1,600 squares total (40x40). Diagonal = 28.28mm. Labeled with numbers vertical (1-40) and letters horizontal (A-NN). Available in a variety of diameters, select below when ordering.

Each Square = 0.5mm when using 1x objective
Lines: Chrome deposition
Chamfer: 0.010" - 0.020"
Flatness: 2 waves or better
Centering: Within 0.005"
Glass Thickness: 1.5mm+/-0.2mm
Surface Quality: 20/10
Parallelism: 2 min.

NOTE: This is a special order product. Please allow 2-3 weeks for delivery. This item is not returnable.