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 25
dividers or com-passes. It consists essentially of the beam (notshown in the drawing), a thin straight bar ofhardwood, and two pieces which slide along thebar and which may be clamped to it at any de-sired distance apart. These sliding attachmentsare called channels, and carry one the needle-point,… … Fig. 12. Protractor. 12. The protractor is shown in Fig. 12. Thisinstrument, while not in such constant use assome of the others, is nevertheless necessary at
Architecture · Building
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
