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A Mother of Pearl Artist Plumb Bob to Aid Drawing or Painting Objects...
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A 19th century set with ivory handles and German silver compasses,...
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The set, in its original fitted case includes 3 side adjustment...
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Three Steel Erasers With Ebony Handles. These are probably 19th...
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Proportional Rack and Pinion Dividers by Harper and Tunstall Ltd.,...
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The Ivory Set-Square ruler and the parallel rule were made with...
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A Rare 6" combination Ivory Rolling Rule and Sector by ELLIOTT...