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Siam Casting Powders Ltd.
SIAM CASTING POWDERS LTD.
SIAM CASTING POWDERS SUPPLIES THE FINEST-QUALITY INVESTMENT POWDERS AND MATERIALS FOR THE LOCAL CASTING INDUSTRIES
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SCP - TECHNICAL DATA

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Comparative Weights a nd Measures

TROY WEIGHT

Used in weighing the precious metals.
24 grains
1 pennyweight
20 pennyweights (dwt)
1 ounce troy
12 ounces
1 pound troy
5760 grains
1 pound troy
The troy is about 10% heavier than the
Commonly used avoirdupois ounce.
Avoirdupois ounces x 0.9115 = troy ounces.

AVOIRDUPOIS WEIGHT

Used in weighing the base metals.
1 dram (or drahms)
1 pennyweight
16 drams
1 ounce avoir
16 ounces
1 pound
16 ounces
700 grains
the avoirdupois pound is about 21 ½%
heavier than the troy pound.
Troy ounces x 1.0971 = avoirdupois ounces.

GRAM WEIGHT
1 gram
= 15.432 grains troy
1.555 grams
= 1 pennyweight dwt.
31.104 grams
= 1 ounce troy
28.35 grams
= 1 ounce avoirdupois

CARAT WEIGHT

Used in weighting precious stones and semi-precious gemstones.
1 carat
= 3.086 grains troy
1 carat
= 0.007 ounce avoirdupois
1 carat
= 0.20 grams
1 carat
= 5 carats
Used in weighting precious stones and semi-precious gemstones.
1 carat
= 3.086 grains troy
1 carat
= 0.007 ounce avoirdupois
1 carat
= 0.20 grams
1 carat
= 5 carats

FLUID MEASUREMENT
1 dram = ½ ounces (fluid) = 1.85 cubic centimetres.
= 0.007 ounce avoirdupois
1 quart = 32 ounces (fluid) = 2 pints = ¼ gallon = 57 cubic inches.
1 gallon = 4 quarts = 128 ounces (fluid) = 3.78 litres.
1 litre = 1000cc (slightly more than 1 quart U.S. ) = 0.264 U.S. gallons.
1 litre = 1000cc (slightly more than 1 quart U.S. ) = 0.264 U.S. gallons.

TEMPERATURE
To convert :
Fahrenheit to Centigrade (Celsius) = Subtract 32 from degrees Fahrenheit, multiply remainder by 5, divide the product by 9.
Centigrade to Fahrenheit = Multiply degrees Centigrade by 9, divide product by 5, and add 32.
UsedThe photographs, descriptions and information provided in this catalogue are given in good faith. We reserve the right to make changes in design and specifications without notice.