Reticle Birnell Scale

KR-837 Birnell scale reticle. Scale = 7mm in 70 divisions. Each division = 0.1mm when using 1x objective. Reticle is available in a number of different diameters, select below when ordering.

Clear Field Area: 0.750"
Glass: 1.620" x 0.125" thick
Glass Type: Opal
Lines: Chrome deposition
Line Width: 0.010"+/-0.002"
Chamfer: 0.010" - 0.020"
Flatness: 2 waves or better
Centering: Within 0.005"
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.