Yep but i would never trust those industry/petrol station pump readouts as ive pumped my tyres up before, came home and checked the pressure with a proper air pump at home (like those wee red ones only its yellow and about 3 times the size) to find that it had over inflated them by around 5psi on each tyre.

Also the reason your tyres loose pressure is that rubber doesnt hold air in, it over time allows air to push out through tiny mirco holes and there for reduces the pressure with in your tyre. The thicker the rubber the slower the process. Therefore tubed tyres will go flater quicker (9 times out of 10) over non tubed.

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Plough on