Builder's architectural drawing self-taught : containing descriptions of drawing instruments and accessories, with rules for using them, and hints as to their care and management ... (1903)
Hodgson, Fred. T. (Frederick Thomas), 1836-1919 · Chicago : F.J. Drake & Co. · leaf 102
sure off half the distance of the majoraxis from the pencil to the stud G, and half theminor axis from the pencil point to the stud H,then swing the tracer round, and the pencil willdescribe the ellipse required. The studs havelittle projections on their tops, that fit easily intothe holes in the… … Fig. 70. A figure that approximates an ellipse may bedescribed by the compasses, and it is well forthe draftsman to acquaint himself with themanner in which this is done, and to this end Isubmit perhaps the most useful method for thispurpose. Let us describe the oval shown atFig. 70. Lay off the…
Architectural drawing
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