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Thread: Units of measurement

  1. #121
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    I tell you.. 45 mm is easier to find than 1-11/16ths inches... at least for me...
    Student of electrical codes. Please Take others advice first.

  2. #122
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    Quote Originally Posted by ggunn View Post
    So was our method of timekeeping.
    It caused some confusion.

    This clock is on Bristol corn exchange. The first minute hand is Bristol time, the second minute hand is GMT.

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    Last edited by Tony S; 10-19-18 at 10:09 AM.
    The reports of my death are greatly exaggerated.

  3. #123
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    Quote Originally Posted by Tony S View Post
    It caused some confusion.

    This clock is on Bristol corn exchange. The first minute hand is Bristol time, the second minute hand is GMT.

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    But coordination of railroad schedules is what drove the establishment of time zones rather than having each locale calibrate their clocks to solar time.

  4. #124
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    There is one standard of weight used the world over, the troy ounce. One troy ounce = 1.0971 Avoirdupois ounce or 31.1034 grams.

    1 Troy pound = 12 troy ounces.

    Used for bullion transactions.
    The reports of my death are greatly exaggerated.

  5. #125
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    Tony...

    Sorry, but multiplication by constants must be used in a certain direction to convert kg to oz(t)! For example you can't go the short way from kg -> lb (avoir'), lb(avoir') -> lb(t), lb(t) -> oz(t), using just 3 constants !

    Instead, multiplication must go from kg -> g, g -> mg, mg -> scruple, scruple -> pennyweight, pennyweight -> dram(t), dram(t) -> oz(t) (requiring 7 constants)!

    Let me know if there is a need know the multiplication constants (5 have no decimals, one has 1 decimal, and 1 has 5 decimals)!

    Regards, Phil Corso

  6. #126
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    Quote Originally Posted by MAC702 View Post
    Using the dark side:
    "Luke, I am your ruler!"
    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

  7. #127
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    I'll give up imperial when you pry it out of my cold, dead hands.

  8. #128
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    Progress is sometimes achieved slowly -- one funeral at a time.

  9. #129
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    Quote Originally Posted by Besoeker View Post
    I know I have brought this topic up before.
    Will the US ever join the rest of the world and move to using SI units of measure?
    For example, is there any sense in two different units for power?

    And AWG is baffling in its derivation.

    https://en.wikipedia.org/wiki/American_wire_gauge
    Works great here. Why change it? Maybe the rest of the world should adopt our standards.

  10. #130
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    Quote Originally Posted by chris1971 View Post
    Works great here. Why change it? Maybe the rest of the world should adopt our standards.

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