The inscription on the dial of this compass reads “LEUPOLD-VOLPEL & CO. PORTLAND, ORE. PAT APLD. FOR." The case, front and back, is branded "FORESTRY M.S.U." and the front flap is stamped "109."
Frederick Leupold (born in Germany circa 1876) was in Boston by 1891. Adam Joseph Volpel (1874-1940) was born in Poland and came to the U.S. circa 1888. By 1911, the two men were in Portland, Oregon, trading as Leupold, Volpel & Co.
Ref: Frederick Leupold, “Surveyor’s Compass,” U.S. Patent 1,936,846 (Nov. 23, 1933), assigned to Leupold, Volpel & Co.
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