I am forming an e-mail list on the subject of binoculars ...

Some were labeled for attachment to Mark 13 binoculars. A 'Schedule of Binoculars' from 1944 has it listed with the Mark 22, and the Mark 27 has a note, 'wedge attachment omitted' (as if it was issued with the Mark 22). These are all B & L 7 x 50s. --Peter. I received a letter about the use of this device from Earl Osborn: Return-Path: ................
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