Console Mounted Tach Reading High

If it wasn't double what it should be I'd say it's the tach. Most of them are off. I had several Autometer tachs that were off by as much as 500 RPM at 8500.

The cheap Autogage I have now is off 250 at 1000, a hundred at 2500 and is dead nuts at 3200.

I used to send them out to have them checked and verified but the ignition I have now can check the tach.