To determine sheet weight:
To find the weight of a piece of any of the above metals of any given
size and thickness, multiply the weight of one square inch of the metal
.001" thick as shown above, by the decimal thickness desired, and
then multiply this product by the number of square inches in the given
piece. The result will be the troy weight of the piece.
For example: To determine the weight of a piece of sterling silver
.020" by 3" by 12',multiply the weight of one square inch of
metal .001" (.005457) by decimal thickness desired - 20. That
equals .10914. Then multiply that by 36 (3 x 12), which equals 3.93 ozs.
To determine wire weight:
Take the number of thousandths in the diameter of the wire whose
weight you wish to determine, square that figure, (multiply it by
itself) and multiply the product by the weight of 1 ft. of the
corresponding metal shown in the above table. The result will be the
weight of one foot of the wire. To find the weight of the entire piece
multiply the weight of one foot by the number of feet in the piece.
For example: To determine the weight of 100 feet of sterling silver
wire .020" in diameter, multiply 20 x 20 = 400. Multiply 400 by the
weight of .001 " diameter wire, .0000516, which equals .02064. For
100 feet multiply that by 100, which equals 2.064 ozs.
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