William Helfricht Vernier Compass
- Sold for:
- Clocks, Watches & Scientific Instruments - 3230M
- Date / Time :
- April 12, 2019 10:00AM
William Helfricht Vernier Compass, Philadelphia, Pennsylvania, first half 19th century, 6-in. dia. engraved silvered dial reading in the center "Wm. Helfricht?Maker/Philada.," needle lifter and vernier adjustment knob on underside, dual spirit levels and sighting vanes, housed in its original mahogany box.
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