Auction: Clocks, Watches & Scientific Instruments - 2248Location: BoltonDate / Time: September 11, 2004 12:00PM
Description:
Brass Surveyor's Compass by Charles F. Helffricht, with silvered dial, cover, outkeeper scale and bubble level, on shaped brass limb with staff-mounts and twin sight vanes, lg. 14 in., in mahogany case, with maker's label Charles F. Helffricht, Mathematical, Optical and Philosophical Instrument Maker. Sign of the Quadrant, No. 122 South Front St. bet. Walnut & Dock, Philadelphia.
Estimate $1,500-2,000
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