Brass Surveyor's Compass by Amsler

Description:

Brass Surveyor's Compass by Amsler, engraved on silvered 3 1/2-inch dia. dial C.T. Amsler, Philadelphia, with needle ring divided 0-90° in four quadrants, East and West points reversed, blued-steel needle with agate hub and lifter operated from the bezel rim, green-lacquered limb with two vials, and screw-on straight-topped sight vanes, lg. 12 in., (one glass vial broken, the other missing, but with two contemporary replacements included),in dovetailed mahogany case with label in lid Amsler & Wirz, Importers and Manufacturers of Mathematical and Philosophical Instruments, 211 Chestnut St., Northeast Corner of Seventh, Philadelphia.
Estimate $600-800

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