The top section of a periscope, tank, consisting of an inclosure which contains one or more mirror(s), and/or prism(s), and a window. It is readily removable to facilitate replacement.
Classification: Military equipments not identified by kind
NSN 6135-01-557-9656
NSN 6105-00-135-0020
NSN 5960-00-085-3995
NSN
NSN 5996-01-628-8624
NSN 5930-01-426-7448
NSN 6135-01-046-6803
NSN 6135-01-215-1245
NSN 5998-00-395-1741
NSN 6650-00-539-4932
NSN 6145-01-266-8415
NSN 7035-00-104-7613