Original railroad requirements?

Thread: Original railroad requirements?

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  1. #1
    Member bczolone's Avatar
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    Dec 2007
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    Question Original railroad requirements?

    What origianlly were the requirements for the first pocket watches to be a "railroad approved" watch?

    Someone is trying to tell me it was the jewels and that the more jewels the more accurate the watch.

    He also said they required a minimum of a 21 jeweled movement for a watch to be considered for railroad approval.

    I don't think this is correct, but I'd like an informed answer to pass on to him and for myself.

    Thanks in advance.

  2. #2
    Moderator sixtysix's Avatar
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    Re: Original railroad requirements?

    in 1893, the General Railroad Timepiece Standards were adopted, which mandated the following standards for railroad watches:


    " .... be open faced, size 18 or 16, have a minimum of 17 jewels, adjusted to at least 5 positions, keep time accurately to within a gain or loss of only 30 seconds per week, adjusted to temperatures of 34 to 100 degrees Fahrenheit, have a double roller, steel escape wheel, lever set, micrometric regulator, winding stem at 12 o'clock, grade on back plate, use plain Arabic numbers printed bold and black on a white dial, and have bold black hands..."
    Go here for the complete artical and all your questions will be answered.
    http://people.timezone.com/msandler/.../Railroad.html
    Later, Gary




    We are the caretakers of mechanical art.
    Member NAWCC, National Association of Watch & Clock Collectors

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