50-100

This is why I tried to set up an auxiliary scope behind a binocular, as related in the list of a few months ago. ... L.A. Body is drawn aluminum, not cast. Prism clusters suspended from the cover. Rubber gaskets used on seats of eye lens, objective lens, and between objective & body; eyepiece sealed with O-ring. pp39-51, disassembly of Mk 45 ... ................
................