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 5998-00-169-0536
NSN 5935-01-257-6546
NSN 6645-00-906-1769
NSN 5990-01-627-8097
NSN 5915-01-425-2303
NSN 6320-00-405-2348
NSN 5905-01-088-6818
NSN 6150-01-141-4670
NSN 6650-01-624-3722
NSN 5925-01-127-6002
NSN 6220-00-635-8818
NSN 5920-01-443-3771