1943 United States Navy Telescope. Used primarily as part of the Mark 16 Aiming System on 50 caliber anti-aircraft gun mounts. Fitted with three sun filters and density knob. The instrument has been retro-fitted to an antique surveyor’s tripod. Circa 1942 Weight: 32 lbs. Overall Dimensions: 54"H x 26"W x 26"D Made: America Material: Brass Date: 1942