Company item name--tester, reticle focus
No other part numbers with same form, fit, and function found.
NSN 5855-00-944-0949
NSN 5855-01-564-0112
NSN 6650-01-440-9215
NSN 5965-01-540-6843
NSN 6685-00-728-0666
NSN 5905-01-258-5347
NSN 5998-00-866-1406
NSN 6135-01-079-7852
NSN 5925-00-044-3194
NSN 6620-01-352-5640
NSN 5950-01-429-3376
NSN 5915-00-993-1825