balance staff
- 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 AgesHarry Chase Brearley