Illustrated catalogue and price-list of drawing and tracing papers, sun print papers and equipments, drawing instruments and materials, surveying instruments, accessories, etc / Kolesch & Company. . 6063 Patent Adjustable Curve Ruler,Each 7-$ .45 Isograph Elliptic French Curve 31 in. 6064 Isograph Elliptic French Curve each, $ . 50 An 8 inch curve of transparent celluloid, scientifically designed fordrawing any size of isometric ellipses. As shown above, the curvedraws one quarter of the ellipse, and is then shifted to the otherthree quarters. The smaller inside ellipses are for no
Illustrated catalogue and price-list of drawing and tracing papers, sun print papers and equipments, drawing instruments and materials, surveying instruments, accessories, etc / Kolesch & Company. . 6063 Patent Adjustable Curve Ruler,Each 7-$ .45 Isograph Elliptic French Curve 31 in. 6064 Isograph Elliptic French Curve each, $ . 50 An 8 inch curve of transparent celluloid, scientifically designed fordrawing any size of isometric ellipses. As shown above, the curvedraws one quarter of the ellipse, and is then shifted to the otherthree quarters. The smaller inside ellipses are for non-scale andfree han*d work. Will fit all sizes of ellipses as well as thoseshown in illustration. Besides its use for ellipses, it is suitable forgeneral draughting. 124 KOLESCH Ac CO. ^jC^ NEW YORK, Splines and Spline Weights
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License: Licensed
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Keywords: ., bookcentury1900, bookdecade1910, bookidillustratedc, bookyear1917
