balance staff

noun

, Horology.

1. a pivoted axle or shaft on which the balance is mounted.

Word History and Origins

Origin of balance staff¹

First recorded in 1880–85

Example Sentences

The ends of the balance staff are made very small so as to form very delicate pivots which turn in jewel bearings.

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg