Accu-gage and Jaco shows the inaccuracy of floor pumps

I wondered just how inaccurate my floor pump was and wow! Quite off!
Products used----
Schwinn floor pump: amzn.to/3ZB9Uuv
Accu-gage gauge: amzn.to/3FcLQ94
JACO FTX-30 gauge: amzn.to/422l1hV

[@davomoto42]

I use the Jaco for my fat bike, and the difference between my pump gauge and the Jaco is even bigger with high volume tires.

[@JoshTaylor]

Nice. Same model? My fat bike uses Schraeder valves otherwise that would have been a great low pressure test.