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Old 6th Aug 2022, 6:53 pm   #5
factory
Octode
 
Join Date: Jul 2009
Location: Cheshire, UK.
Posts: 1,706
Default Re: Using a dmm as a tachometer

Probably easier to make an optical tachometer and yes the counter reading needs dividing by 60, unless you have one that will read in cycles per second. I have two vintage optical tachometer attachments, one valve (HP) & the other transistor based (Airmec).

David
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