No other part numbers with same form, fit, and function found.
A small, tubular item utilizing an eyepiece, cross hair reticle, and an objective lens, to align the optical axis to the mechanical axis of a telescopic instrument. It does not have the viewing power of a telescope. It may have two like items secured in a common holder for simultaneous checking of a dual optical system.
NSN 6650-01-179-3823
NSN 5910-01-359-1966
NSN 5855-01-331-8502
NSN 4140-00-091-0869
NSN 6130-01-266-2298
NSN 6105-01-144-4467
NSN 6320-01-323-7565
NSN 5945-01-249-6084
NSN 6650-01-029-2995
NSN 5915-01-340-0650
NSN 5920-01-083-4995
NSN 5930-00-459-4604