A cylindrical item usually having a flanged aperture designed to hold and mount an instrument in a predetermined position. Excludes holder, watch.
NSN 5998-01-209-8839
NSN 6150-01-128-4487
NSN 6220-01-408-6890
NSN 5905-01-442-5018
NSN 6105-01-179-3606
NSN 6220-01-413-2248
NSN 5965-01-592-2436
NSN 6220-01-647-9134
NSN 5910-01-198-1828
NSN 2925-01-146-0278
NSN 5985-01-525-1180
NSN 5990-00-932-3070