hairspring

[ hair-spring ]

noun

, Horology.

1. a fine, usually spiral, spring used for oscillating the balance of a timepiece.

hairspring

/ ˈhɛəˌsprɪŋ /

noun

1. horology a very fine spiral spring in some timepieces, which, in combination with the balance wheel, controls the timekeeping

Word History and Origins

Origin of hairspring¹

First recorded in 1820–30; hair + spring

Example Sentences

If this is a balance pivot, be very careful to see that your balance is true and poised before putting on hairspring and roller.

From Project Gutenberg

The hairspring stud E is of steel, shaped as shown, and comes outlined with the other parts.

From Project Gutenberg

We refer to arranging and disposing of the impulse of the escape wheel to meet the resistance of the hairspring.

From Project Gutenberg

As we set the bankings the pallets are all right; but to test matters, let us remove the hairspring and put the balance in place.

From Project Gutenberg

The Curb Pins sometimes produce the ferric oxide mentioned by their action on the hairspring.

From Project Gutenberg