GEM, INSIGHT, JPI, ETC....
Larry,
I had one of the early JPI's. If I remember correctly it had only a digital read out of (1) cylinder at a time and would go thru all (12) cylinders ONE at a time. I really needed a flight engineer to observe it. When JPI went to bar grafts, lean find, oil pressure, TIT, etc. and then to the 760, both engines in one guage I bought a 760 being familar with the company and being able to talk to them if needed plus I had the Tanis cylinder heaters and they worked well with the JPI CHT probes. Mr. Riley used (2) indicators in his 337 Rockets I believe because the 760 was not available at that time. I know of guy's that have GEM, Insight, etc and are happy with there choice...
guy, the old 72 driver...
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