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sector gear

noun
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Definition of sector gear

1 or sector wheel : a toothed device resembling a portion of a gear wheel containing the center bearing and a part of the rim with its teeth
2 : a gear having a sector gear as its chief essential feature

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“Sector gear.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/sector%20gear. Accessed 12 December 2019.

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