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Apothecaries' Weight System

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Apothecaries' Fluid Measure

  • 1 U.S. fluid ounce = 8 drachms = 1.805 cubic inch = 1/128 U. S. gallon
  • 1 fluid drachm = 60 minims
  • 1 British fluid ounce = 1.732 cubic inch

Apothecaries' Weight

  • 1 pound = 12 ounces = 5760 grains
  • 1 ounce = 8 drachms = 480 grains
  • 1 drachm = 3 scruples = 60 grains
  • 1 scruple = 20 grains
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Related Topics

• Miscellaneous

Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more.

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Mass vs. Weight

Mass vs. weight - the Gravity Force.

Parts per Million - ppm

ppm - or parts per million - is commonly used as a unit of concentration.

SI System

An introduction to the SI metric system.

Symbols Used to Denote a Chemical Reactions and Process or Condition

Explanation of symbols used as subscripts or superscripts to tell more about the type of chemical reaction, process or condition.

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