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Re: Marquette automotive ignition scope model 40-275
Posted to Tool & Equipment Forum on 8/22/2004 1 Reply

Pull the two calibration slide switches forward. Set the number of cylinders to 6. Set dwell to 60 deg and RPM to 1200.

Volts and Amps are calibrated with known standard that's been checked with a DVM and VAT.

That's all I can remember about the 275.

HTH... Login to read more.

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