Original Item: Only One Available. This is a genuine WWII Japanese Nikko Artillery Periscope. Faintly marked under paint 8 x 6 and NIKKO with clear optics and adjustable height original tripod. This is a small desktop sized optic that was used by Imperial Japanese Army Officers for Artillery sight and range purposes. Large examples were used in the trench to peak over the top without the observer losing their head. The optics are approximately 2 feet tall when mounted on tripod.