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balance staff

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noun Horology.
  1. a pivoted axle or shaft on which the balance is mounted.
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Origin of balance staff

First recorded in 1880–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for balance staff

Historical Examples

  • The roller being fastened to the balance-staff, of course, turns just as the balance turns and with it the jewel-pin.

    Time Telling through the Ages

    Harry Chase Brearley