APPARATUS FOR DETERMINING KINEMATIC CHARACTERISTICS OF CEPLERIAN POINTS AND FOR DECISION OF TASKS IN SPHERE PROJECTIONS Russian patent published in 1994 - IPC

FIELD: decision of practical tasks of spherical trigonometry. SUBSTANCE: apparatus has a casing of two transparent discs, mounted on an axle; a rotary disc with time dial, degree dial and several latitude dials. On one of the transparent discs a rod is mounted, the rod supports a limb, having a degree dial and secured to the same axis as a rotary lever, on which a second lever is mounted. The both levers with the aid of slides are connected with a guide, which with the aid of a third slide may perform reciprocation motion along the rod. The apparatus also has a gage with a linear scale and with forth slide; a dial, stoppers, a cursor, mounted at an outer side of the other transparent disc and having latitude dials and with the aid of a hollow axle and two coaxially joined sliders connected with a sighting rule. A limb, indicating cursors, arranged on the sighting rule, and stoppers are secured to one of the sliders. EFFECT: enlarged range of tasks, being decided. 1 cl, 3 dwg