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Precision Instruments Micrometer - Which Drive?

havinnoj

Well-known member
Joined
Oct 17, 2012
Messages
59
I'm looking to get a new PI micrometer torque wrench in 3/8 but have a couple of questions.

What's the difference between the fixed drive and the ratchet models they offer? I'm guessing the fixed drive is clockwise rotation only, whereas the ratchet ones will ratchet - what would be the pro's and con's of both?
 
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