Looking for a decent digital manometer to measure gas pressures. Would like to see it go up to 5 psi. The fieldpiece does up to 60". Does it go into ol on higher press or does it fail. I see the extech does both airflow and press but only goes up to 20." I like the fluke 922 but it is a bit pricey. Not sure if it even does gas press. Would not mine airflow and gas press just not ready to drop 6-7 hundred.