Reticle Grid 1mm Squares 400 Total

KR-428B glass eyepiece reticles. Grid 20mm x 20mm. 400 squares total (20x20). Diagonal = 28.28mm. Available in a variety of diameters, select below when ordering.

Each Square = 1mm 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+/-0.1mm
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.