It will bleed air from what it is connected too. The gauge does not hold air, it registers the air pressure being applied to it.
This unit has a 1/4" fitting.
The clip-on cannot be changed, it is solidly attached to the hose. The hose could possibly be switched, being that it’s made of some sort of flexible rubber. This hose appears to be the weakest point of construction because rubber can dry out becoming brittle.
No. You'll need an adapter to make it work with Presta Valves
You will have to contact the store to check their stock.
Yes with the right size air hose or connector it will hook up to any compressor..
I inflated my tires to 30 psi on the inflation gun gage. When I check with my bourden tube gage, the reading was 32 psi. I have serviced my tires for years with the bourden tube gage and trust it. So based on that I would say, 2psi/30psi = 6.7 %. Every other inflator I looked at had at least a 5psi deviation, most had more. I like the fact that the error is high since over inflation is better than underinflation.
I don't know as the one I use goes to 125psi
The MP6000 tire inflator only comes with a 1/4" NPT threaded inlet.