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Illustrated catalogue of Wadsworth, Howland & Co. : importers and dealers in artists' supplies and architects' and drafting materials. (1895)
Wadsworth, Howland & Co. (Boston, Mass.) · Cambridge Co-operative Soc., Boston · leaf 137
No. II8.iiSa. 118b. 118c. 119.120.121.122. 123- 124. 124a.124b. 125. 126. 127.128. 129. 130. »3i- … r lines andlines and No. iiS. Proportional Dividers, dy^ inches long, finely graduated for linesProportional Dividers, 7 inches long, finely graduated for lines and circlesProportional Dividers, 7)^ inches long, finely divided fo circles, with rack adjustment ....Proportional Dividers, 7)0 inches…Artists' materials · Mathematical instruments
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