geometric square

An instrument for measuring distances and heights, and useful for its port ability as well as for the facility, by the common rule of three, of solving most of the problems arising from its use. It is made of bra or wood, twelve or eighteen inches square, and the quadrant is graduated in each direction. The two sides opposite to the axial point of the alidade are graduated to 100 equal parts, with major divisions of ten of said parts. The 100 point finishes at the angle obliquely opposite the center from which the arc is struck. One side represents the horizon, and the alidade with two sights is equal in length to the diagonal of the square. The alidade has divisions equal to those on the sides of the square. geometrical-stairs, s. pl. Building: A flight of stone stairs where the steps are secured into the wall at one end only, the other forming a continued string with an open newel. gě-ô-mět-ri-cal-lỹ, *ġě-ô-met-ri-cal-lie, adv . [Eng. geometrical ; -ly .] In a geometrical manner; according to the rules or laws of geometry.