set your altimeter to field elevation and then do a low pass (100) over the runway and note the altimeter setting. You will have to eyeball the 100 feet but if the altimeter is reading something much different then the 100 feet plus field elevation then you have a static error.
Tom Martin RV1 pilot 4.6hours!
CPL & IFR rated
EVO F1 Rocket 1000 hours,
2010 SARL Rocket 100 race, average
speed of 238.6 knots/274.6mph
RV4, RV7, RV10, two HRIIs and five F1 Rockets
RV14 Tail dragger
St.Thomas, Ontario Canada, CYQS