As discussed on the list not too long ago there are a number of automotive digital multi meters that will do this job also. Harbor freight or your local auto supply should be able to help.

Dennis,
From my phone.
________________________________
From: JRodgers<mailto:jrodgers113@GMAIL.COM>
Sent: ‎12/‎26/‎2013 8:01 PM
To: vanagon@GERRY.VANAGON.COM<mailto:vanagon@GERRY.VANAGON.COM>
Subject: Inductive Tach for tuning

Seems it's one thing after another with my vans the last few days. The
van I need to tune has a dead tach. I have an old Sears engine analyzer
in which the tach has always worked - but today it decided to die on me.
So - I need a cheap inductive tach just for that one purpose - setting
the rpm for whatever operation I'm doing. Anyone have any suggestions?
Cheap is the operative word here. Functional is important too.

Thanks.

John