ed for linesand polygons, _ • • Proportional Dividers, 9 inches long, with micrometer adjustment,finely graduated for lines and polygons, Proportional Dividers, S inches long, with rack adjustment, grad-uated for lines, .......... Bisecting Dividers, -]A inches long For Illiislrdtioiis of Nos 35,… … NO. 35. No. ;6.
Artists' materials · Mathematical instruments
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