What tyre pressure gauge for 430 wheels?

[topless360]

Bit of a boring topic, but I've normally used a Halfords digital gauge which seems reliable enough. However, it doesn't fit inside the 430 rims so I've had to resort to a pencil type gauge which is not very accurate.

Are there any gauges that I should look at? I've seen the Race X Professional which comes highly recommended, but I'm not sure if it will fit in the F430 wheel. Anybody with experience of that specific combination?