Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 36
the points are close together. 24 MECHANICAL DRAWING. 17 The pen may be filled by means of a common steel pen orwith the quill which is provided with some liquid inks. The penshould not be dipped in the ink because it will then be necessaryto wipe the outside of the blades before use. The ink…
Architecture · Building · Carpentry
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