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sweep hand

noun, Horology
1.
a hand, usually a second hand, centrally mounted with the minute and hour hands of a timepiece and reaching to the edge of the dial.
Origin
1940-1945
1940-45
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for sweep-hand

sweep hand

noun
1.
(horology) a long hand that registers seconds or fractions of seconds on the perimeter of the dial
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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10
11
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