Optical Instrument Reticle

Features

Specifications

• Diameter:
  1.7323 inches
• Angle In Deg:
  45.0
• Axial Thickness:
  0.3150 inches
• Refraction Index:
  1.5171
• Dispersion:
  64.5 angstroms
• Rim Finish:
  Ground
• Graduations/markings:
  Cross line
• Convex Surface Radius:
  1.9921 inches
• Style Designator:
  Crossline
• Supplementary Features:
  Material optical glass per jan-g-174, grade c
• Fsc Application Data:
  Fire control periscope mk 23
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-131-6935
• Special Features:
  0.0197 in. Bevel depth