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
Micrometer … Reads in thousandths of an inchand is the basis of measurement usedin this book. Screw, Point or Dial Gauge Reads in Points Each point being equivalent to Xof one thousandth of an inch. EXAMPLE:— 80 points on thisGauge are equal to20 thousandths ofan inch. li Same as Gauge shownabove except that…
Precious metals · Jewelry
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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