Graphometer
id:
graphometer-284-18357857
title:
Graphometer
text:
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 diameter a "box and needle" (compass) is fixed. On the same middle the alidade with two other sights is fitted. The device is mounted on a staff via a ball and socket joint. In effect the device is a half-cir
brand slug:
wiki
category slug:
encyclopedia
description:
Surveying instrument for angle measurements
original url:
https://en.wikipedia.org/wiki/Graphometer
date created:
date modified:
2023-08-16T04:45:04Z
main entity:
{"identifier":"Q3321461","url":"https://www.wikidata.org/entity/Q3321461"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/0/03/Butterfield_graphometer_img_2601.jpg","width":3329,"height":2219}
fields total:
13
integrity:
15