Can anyone recommend a digital multimeter

[chris68]

Example of crankshaft rpm to ignition frequency conversion ...

At 1000rpm, divide by 60 for revs per second, giving 16.666rps

Six cylinder, four stroke gives 6/2 = 3 ignition pulses per revolution

So at 1000rpm we see ignition pulses at 3 x 16.666 = 50Hz

Relationship between rpm and ignition pulse frequency is 20 (for six cylinder, four stroke)

Cheers

[RobFrost]

I got this cheapo one off Amazon and I love it. https://www.amazon.co.uk/Neoteck-Multim ... 06Y2J6ZFD/