Topeak SmartGauge D2 Pressure Gauge

Best gauge for the money.
Batterij not included.

Works perfectly to me
You have to inflate the tyre a bit more than it should be. Then you can use this device releasing the extra air with the button adjusting the pressure to required value. Seems to be very precise.
The air lose is very minor if you do it properly.

Fragile. Very quickly broken switch.
Quite large.