timing washer

noun

Definition of timing washer

: a small thin ring of metal (as gold or platinum) placed under the balance screws of a watch to slow the vibration period of the balance or to help poise it

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“Timing washer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/timing%20washer. Accessed 20 Jan. 2021.

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