Skinner

Auctioneers and Appraisers

Drafting Instruments

Auction:
2345
Lot:
152
Sold for:
$588$500

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Auction:
Clocks, Watches & Scientific Instruments - 2345
Location:
Boston
Date / Time :
July 29, 2006 10:00AM

Description:

Drafting Instruments, a brass parallel rule with protractor by Wm. Helfrfricht, Philadelphia; a French brass sector; a 9 1/4-inch brass parallel rule with engraved links and central rosettes; a 15-inch ebony parallel rule with shaped brass links, in mahogany case; and a brass full-circle protractor, with two scales of degrees divided 0-90 in four quadrants and 0-360, dia. 6 in.
Estimate $200-300

Keywords

Philadelphia, Brass instruments, Measuring instruments, Protractor, Technical drawing