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balance staff

noun, Horology.
1.
a pivoted axle or shaft on which the balance is mounted.
Origin of balance staff
1880-1885
First recorded in 1880-85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for balance staff
Historical Examples
  • There is no jeweling in the escapement or on the other end of the balance staff.

    The Auburndale Watch Company Edwin A. Battison
  • There are many points worthy of consideration in the making of a balance staff that are too often neglected.

  • The two popular methods of holding a balance staff in wax have been described and illustrated; the reader may take his choice.

  • Potance or PotenceA vertical or hang down bracket, supporting the lower end of the balance staff in full-plate watches.

    Time Telling through the Ages Harry Chase Brearley
  • The ends of the balance staff are made very small so as to form very delicate pivots which turn in jewel bearings.

  • The small circle at A represents the center of the pallet staff, and the one at B the center of the balance staff.

  • It will be seen the impulse roller is staked flat against the hub E of the balance staff.

  • Our advice is to set both stones in places corresponding to the axis of the balance staff, and the escape-wheel mobiles.

  • In these frictional escapements the balance staff locked the train while the balance performed its arc of vibration.

  • There are five jewels, four to support the balance staff and an impulse jewel.

    The Auburndale Watch Company Edwin A. Battison

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