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    Railroad Time
    From: Doug MacPherson
    Date: 2014 Mar 1, 16:28 -0800

    I was recently reading an article on railroad chronometers (pocket watches I believe), and their importance in the 19th and early 20th centuries. In the description it stated that they had a maximum variation of 30 seconds (approximately 4 seconds daily) per week, and a check was done weekly.

    What was the check done against? Did the telegraph provide a source of exact time from a reference such as Greenwich? Did Celestial play a role? Who did the check?

    I know there are many instances in literature of people setting their personal pocket watches daily to the arrival of certain trains into town.

    Any references would be appreciated.

    Cheers,

    Doug


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