Used on 105MM and 155MM howitzers.

< SPECIFICATION >
Height 9^3/4 inch
Weight 5^1/2 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