The gear drive, shown in the illustration, can have the backlash determined best by using a __________. MO-0091
Official USCG Answer & Rule Citation
Correct Answer: Option C — feeler gauge
Precise measurement of mechanical gear backlash requires inserting a feeler gauge between the meshing gear teeth. This standard engineering practice accurately quantifies the clearance to ensure proper lubrication and prevent destructive tooth binding under operating loads.
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