R27 Ronchi Ruling 125 Lines/mm

Typically used for testing of resolution, field distortion and parfocal stability, but may be paired to provide interference patterns (fringe patterns) and as light gates.

 

Glass Type and Thickness
B270 1.5mm thick

Dimensions
50mm x 50mm

Method
Vacuum Deposited Chrome on Glass

Pattern
Ruled over 30mm wide central strip

Line Thickness
0.004mm ± 0.001mm