Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 41
Fig. :}0. shown ni Fig. 30. This instrument is used for drawing curvesother than ares of circles, and both pencil and line pen can beused. To draw the curve, a series of points is first located andthen the curve drawn passing through them bv using the part ofii>e irregular curve that i)as8e8…
Architecture · Building · Carpentry
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