Fuente: WIPO "rice" 4688. Zalinski, E. L., and Rice, I. L. Feb. 26. Sights and methods of sighting. -The apparatus is shown in side elevation in Figs. 1 and 3, and in end elevation in Fig. 4. Two telescopes 1, 20 arranged at right-angles to one another, are employed for sighting and elevating guns which are mounted at a 'known height above the horizontal plane of the target. The telescope 1 is an ordinary sighting telescope, a given angle of depression of which corresponds to a given range. The telescope 20 is mounted upon the end of, and transversely to a spindle 77, and is used for sighting a mark 21 on the gun. The movements of the telescope 20 are governed by the movements of the telescope 1 through a nut 6, which is traversed along a screw 4, and which, through the saddle 9 and incline 10, depresses the telescope 1, and through the projection 15 and cam-groove 16 in the sleeve 17, elevates the telescope 20. The operator at telescope 1 controls also the training-gear, while the observer at telescope 20 controls the elevating-gear. The cam-sleeve 17 may be geared with an-elevation indicator at a distant point, so as to indicate the elevation to be given to the gun for a given depression of the telescope 1. A screw 12 and nut 13 enable the sight to be adjusted for tide corrections.