Optical Instrument Reticle

Features

Specifications

• Diameter:
  Between 1.3750 inches and 1.3780 inches
• Scale Calibration:
  0 to 60 mils
• Axial Thickness:
  Between 0.137 inches and 0.157 inches
• Refraction Index:
  1.5230 and 1.5838
• Dispersion:
  58.6 angstroms and 46.0 angstroms
• Rim Finish:
  Polished
• Graduations/markings:
  Elevation type
• Style Designator:
  Vertically graduated
• Supplementary Features:
  Material optical glass per mil-g-174, grade c, type 523-586 or type 584-460
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-01-105-5608