SW TACH calibration

[Rick]

Does anyone know how to calibrate standard gas tachs. I have access to a tach tester that has selectable RPM test points. I guess this might suffice as a transfer standard. Seems like the tach has two ajustments.

Thanks, Rick

[Dave Kosh R.I.P.]

Rick, You might want to take it to a local speedometer shop. They may be able to do it as they work on tachs also. Dave K