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 24
ircular arcs, and is inserted in thecompass in place of the pencil leg. 8. The hair-spring dividers are shown inFig. 6; and the small dividers or bow spacers inFig. 7. 9. The bow pencil or small compass and the MECHANICAL DEAFTING 5 bow pen are shown in Figs. 8 and 9 respectively. 10. The ruling… … Fig. 11. Beam Compasses. tanees, and for drawing circles which are beyondthe capacity of the ordinary 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…
Architecture · Building
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