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 6645-00-739-6718
NSN 6650-00-388-4517
NSN 5999-01-630-5274
NSN 5990-01-193-0487
NSN 5975-01-011-4068
NSN 6240-00-810-3774
NSN 7035-00-946-2642
NSN 6105-01-557-4372
NSN 5965-01-600-5604
NSN 5925-01-418-4541
NSN 6135-00-826-4798
NSN 5930-00-403-5529