Used on 105MM and 155MM howitzers. illumination is derived from a radioactive light source (H₃ Gas)

< SPECIFICATION >
Height 9^3/4 inch
Weight 7.1 lb
Power 4 x
Field of View 10°
Exit Pupil Diameter 0.165 inch
Effective Focal Length
   Objective 4.004 inch
   Eyepiece 1.000 inch
Azimuth Range 6400 mils
Elevation Range 600 mils