This instrument was used to calculate inaccessible distances and heights, measure horizontal angles, draw charts or topographic maps, and make trigonometric calculations.It has a semicircle calibrated from 0 to 130 degrees with a cut-out center. An alidade rotates around a small cut-out circle. The base is bordered by a graduated ruler used to mark minutes on the edge and note down the angles from topographic measurements. To create charts, it was used on a board of approximately one meter square, supported on a tripod, on top of which the paper that was to be drawn on was laid.
Af TopImpressionists.com' redaktion
Discover Charles William Carey (1862-1943), a painter of captivating landscapes & seascapes influenced by Impressionism. Explore his luminous oil paintings, chiaroscuro technique, and works featured on TopImpressionists. #landscapeart #seascapes #impressionis
Udforsk Spaniens flådearv på Naval Museum i Madrid! Oplev imponerende samlinger, smukke glasmosaikker og arkitektonisk storhed, der viser maritim historie fra renæssancen til moderne tid.