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The handy book; containing tables, rules and other information regarding the working of the precious metals (1914)
Handy & Harman (Firm) · Bridgeport, Conn., New York city, Handy & Harman · leaf 14
960 127 .499999 35 .137795 81 .318897 128 .503936 36 .141732 82 .322834 129 .507873 37 .145669 83 .326771 130 .511810 38 .149606 84 .330708 131 .515747 39 .153543 85 .334645 132 .519684 40 .157480 86 .338582 133 .523621 41 161417 87 .342519 134 -527558 42 .165354 88 .346456 135 .531495 89 .350393… … MicrometerPrecious metals · Jewelry
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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