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 6320-01-116-3980
NSN 6240-01-026-0032
NSN 5925-01-181-7358
NSN 6135-00-838-0706
NSN 4140-01-100-1223
NSN 4140-00-478-2012
NSN 5998-01-432-2189
NSN 5910-01-598-2180
NSN 5910-00-806-3942
NSN 6610-00-186-9180
NSN 5895-00-167-7995
NSN 5945-01-147-2500