Radford's cyclopedia of construction; carpentry, building and architecture. Based on the practical experience of a large staff of experts in actual constrcution work (1909)
Johnson, Alfred Sidney, 1860-, Radford, William A., 1865- · Chicago Radford Architectural Co · leaf 45
>■ *-J < r … 26 MECHANICAL DRAFTING 27 44. To Sharpen the Pen. Unless the pensare in good condition, satisfactory work is diffi-cult or impossible to obtain. Every draftsmanshould be able to keep his pens in good condi-tion, and with care and practice he will be ableto do this. After considerable ase, the…
Architecture · Building
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
