Reticle Half Comparator 180 Degrees

KR-831 glass eyepiece half comparator with a total of 180°, marked every 10°.

Field of view = 19mm.

Alternate options:
Field of view = 15mm (KR-831A)
Field of view = 9.5mm (KR-831B)
Field of view = 6mm (KR-831C)
Field of view = 3mm (KR-831D)
Field of view = approximate total length of horizontal line.

Lines: Chrome deposition
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.