The Banggood digital pressure gauge is definitely leaking. This mechanical gauge has held pressure (and not drop a lot of psi's) for more than 24 hours now with just changes due to atmospheric temp and pressure. It moved not more than +/- 1 tick which is 20 psi. I would still like a digital pressure gauge to discern down to 1 or 2 psi so have ordered this one
SMC ISE30A N01 P Digital Pressure Switch New Out of A Box | eBay , which I hope will hold pressure. I think it will. I wrote Banggood regarding their leaky pressure gauge, sent then pic of the test setup and they wrote back saying they will refund my money within 72 hours. Haven't gotten the funds yet but will see.
