With any luck this one will be answered by TKG, RCIGN, PEreivers, RCBugman, Dave Wallace, and D. Hansen. You guys ARE the specialists!

I'm looking for a very good compression gauge that can be easily adapted for use on gassers ranging in size from 28cc to 150cc. The inlet must be adaptable to fit a wide range of plug openings. Currently the method we are using to gauge an engine's health is a max rpm comparison from one day to the next, but I believe an additional test comparing engine compression from one flight to the next would provide additional baseline data to detemine if an engine is up for another long flight or not.

Any ideas as to where a good gauge can be found? It doesn't have to be accurate to the fifteenth decimal point or anything like that, but should be accurate enough to provided consistent pressure readings and somewhat reasonable in price. Under $75.00 should put it in a range that I would want to deal with.

Thanks,
Pat