Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 36
Fig. 24. Fisr. 25. Fig. 26. ehamois or a soft cloth, because most liquid inks corrode the steel.In using the pen, care should be taken that both blades bearequally on the paper. If the points do not bear equally the linewill be ragged. If both points touch, and the pen is in goodcondition the line…
Architecture · Building · Carpentry
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