Elementary optics and applications to fire control instruments (1922)
United States. Army. Ordnance Dept · Washington, Govt. Print. Off. · leaf 82
OBJECTIVE … EYE LENSriELD LENS RETICULE ROOF PRISM Fig. 75.—The right anple telescope. Tfie panoramic telescope.—The telescopic system employed inpanoramic sights is shown in figure 76. The objective, lower re-flecting prism and eyepiece are similar to those sho\\ai in figure 75for the right angle telescope.…
Optics · Optical instruments · Fire control (Gunnery) -- Optical equipment
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