Pre-1864 (Post 1864 has serial numbers), 55 mm (2.5 inch) lenses (est. 30X), made by A Bardou for the Union Army at the time. Has blackened brass, 9 inches fully extended. Optics are clear and work perfectly with handling wear. Has leather case with out cover.
Equipment & Optics
WWI European Hand-Held Brass Trench Periscope is 23.25" long, marked "B.26".
Boresight telescope made by Farrand Optical Co., Inc., dated 1943. Optics are clear. The U.S. Navy used these boresights to zero alignment for smaller guns, such as the 20mm anti-aircraft gun.
This instrument was used to determine the distance to an enemy warship. Has U.S. Navy BU. Ships serial number "14168-1943". Manufactured by Schick Inc. in Stanford, CN.
Early 20th Century U.S. Navy Quartermaster spyglass at 12.5 power magnification. Serial number 1864. Leather wrapping in good condition.
Model of 1887 with brass plate fixed to mouth. Leather is marked Rock Island Arsenal. Leather strap has a tear, otherwise good overall condition.
German Bremen 8x30 Featherweight binoculars. Optics are clear. Has some handling wear on end of scope optics. Diopter rotates and works. Comes with leather case, missing top. In good condition.