{"version":"1.0","type":"link","title":"Graphometer - Newikis","description":"The graphometer, semicircle or semicircumferentor is a surveying instrument used for angle measurements. It consists of a semicircular limb divided into 180 degrees and sometimes subdivided into minutes. The limb is subtended by the diameter with two sights at its ends. In the middle of the…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://thumb.wikimedia.org/wikipedia/commons/thumb/0/03/Butterfield_graphometer_img_2601.jpg/1280px-Butterfield_graphometer_img_2601.jpg","thumbnail_width":1280,"thumbnail_height":853}