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Old 17th Dec 2018, 12:58 am   #17
broadgage
Nonode
 
Join Date: Jan 2010
Location: North Somerset, UK.
Posts: 2,129
Default Re: Nice Way To Measure Turntable Speed

As has already been said, a strobe disk and a line powered neon lamp may be used to check for correct RPM.
The accuracy of this technique may be improved by checking that the mains frequency is at or very close to the nominal value.

The "dynamic demand" website has an almost real time display of UK grid frequency.

http://www.dynamicdemand.co.uk/grid.htm
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