SIGHT Russian patent published in 2001 - IPC

FIELD: optical instrument engineering, in particular, small arms sights. SUBSTANCE: the sight has an objective lens, eye-piece, device for changing the angle of sight, two screw pairs, two compression springs and a parallelogram mechanism that is made of two pairs, for example, of flat springs. The screws of the screw pairs, compression springs and the pairs of flat springs are installed mutually perpendicularly, each of them. One ends of each pair of flat springs are fastened to a frame, and the other ends of the first pair - to a slide, and those of the second pair to the body. The screws of the screw pair and the first ends of the compression springs rest on the slide, and their second ends - on the body. The nuts of the screw pairs are installed in the body, they are slit nuts and provided with tightening-up adjusting screws. EFFECT: enhanced accuracy of sighting in the process of the whole period of service life due to enhanced durability of the mechanisms. 3 dwg