straightedge
A ruler used by draughtsmen for ruling long lines for which the blank" >square/" class="glossaryLink" data-cmtooltip="be2105a9ea8527c6c388bb9c7cc5942a" blank" >target="_blank" >T blank" >square cannot be conveniently employed; the converging lines of a large blank" >target="_blank" >glossary/blank" >target="_blank" >glossary/perspective/" class="glossaryLink" data-cmtooltip="a633ed2f2fcfa85dfef47a97abf230ec" blank" >target="_blank" >perspective-blank" >target="_blank" >drawing/" class="glossaryLink" data-cmtooltip="f406c4d654f5681223a54683cc9e3868" blank" >target="_blank" >blank" >target="_blank" >glossary/perspective/" class="glossaryLink" data-cmtooltip="a633ed2f2fcfa85dfef47a97abf230ec" blank" >target="_blank" >perspective blank" >target="_blank" >drawing. It is usually of lights/" class="glossaryLink" data-cmtooltip="8f964b2b4e1a5431a07a82cb3c0c89fb" blank" >target="_blank" >light, blank" >target="_blank" >glossary/hard-wood/" class="glossaryLink" data-cmtooltip="adfaab658fe8cb9cd0dab0ca655567ef" blank" >target="_blank" >hard wood, but hard blank" >rubber and celluloid are also used. 2. An blank" >target="_blank" >glossary/implement/" class="glossaryLink" data-cmtooltip="bd9acb1699255a72617ee0ddeb105a1e" blank" >target="_blank" >implement used in blank" >target="_blank" >building, for various purposes. For laying off long lines and for blank" >target="_blank" >testing the evenness of a plane blank" >target="_blank" >surface of blank" >target="_blank" >plaster or stone, a thoroughly blank" >target="_blank" >glossary/seasoned/" class="glossaryLink" data-cmtooltip="d96dab94a5594b1d9a25990ccb256559" blank" >target="_blank" >seasoned boards/" class="glossaryLink" data-cmtooltip="ed79d0c693cdff23823c976dc53f772b" target="_blank" >board with an edged planed perfectly true is employed… (Sturgis, 1900)