Reticle Grid 0.5mm Squares 1,600 Total Labeled Accented

KR-451 glass eyepiece reticle. Grid 20mm x 20mm. 1,600 squares total (40x40) labeled with numbers horizontal (1-20) and letters vertical (A-T). Every other line accented. Diagonal = 28.28mm. 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.