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Old February 7, 2013, 07:25 PM   #13
Misssissippi Dave
Senior Member
Join Date: December 5, 2009
Posts: 1,411
For what you want it seems easy enough to do. Connect a 12 v. dc power supply to an hour meter with a light to make your work easier to see. Using an off and on switch you simply turn it on when you start loading and turn it off when you finish. This will give you an approximate number of hours of use. Most people figure usage buy the number of rounds produced.
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