US Army, Technical Manual, TM 5 6675 312 14, THEODOLITE, SURVEYING, DIRECTIONAL, ONE, (WILD HEERBRUGG MODEL T16 75DEG), (NSN 6675 01 075 3278), THEODOL


US Army, Technical Manual, TM 5 6675 312 14, THEODOLITE, SURVEYING, DIRECTIONAL, ONE, (WILD HEERBRUGG MODEL T16 75DEG), (NSN 6675 01 075 3278), THEODOL
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