Rolling ruler
id:
rolling-ruler-264-4641412
title:
Rolling ruler
text:
A rolling ruler is a ruler that contains a cylinder much like a rolling pin inside, thereby enabling it to "roll" along a sheet of paper or other surface where it is being used. A rolling ruler can draw straight, parallel lines, and also has other instruments included, enabling it to do the jobs of a protractor and compass. The modern rolling ruler, with protractor, pivot pin and multiple pin holes serving as fixed length compasses has been patented in the US in 1991 by Wei Wang.
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Rolling_ruler
date created:
date modified:
2021-02-28T12:51:05Z
main entity:
{"identifier":"Q7361245","url":"https://www.wikidata.org/entity/Q7361245"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/5/5c/Rolllineale.jpg","width":5184,"height":3456}
fields total:
13
integrity:
14