Originally Posted by Jon G
Hmmm, well that's a short sweep 0 to 80 gauge. I don't believe they make that one any longer, but a sender might be available. You should contact AutoMeter. Short sweep and full sweep gauges used different senders. The sender in your engine may not mate with that gauge.

You're right, I looked at 211 oil pressure gauges of Autometer, at least I think it must be an electric air core gauge, short sweep. But the recommended senders for the '69 C10 look exactly like my picture. Any way to test these senders off the engine or the gauge?