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Thread: Units of measurement

  1. #121
    Join Date
    May 2018
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    Jamaica and london
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    766
    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
    Join Date
    Jul 2013
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    Resting under the Major Oak UK
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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; Yesterday at 10:09 AM.
    The reports of my death are greatly exaggerated.

  3. #123
    Join Date
    Oct 2009
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    Austin, TX, USA
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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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    Jul 2013
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    Resting under the Major Oak UK
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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
    Join Date
    May 2012
    Location
    Boca Raton, Fl, USA
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    1,082
    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
    Join Date
    May 2005
    Location
    Richmond, Virginia
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    23,513
    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

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