Tire gauge recommendations?

Having a look at the gauges made by Longacre Racing, look pretty good I have to say. Anyone have one?

This one in particular caught my eye:

http://www.longacreracing.com/catalog/item.asp?id=217&catid=8
 
I've been using the Craftsman digital gauge.

http://www.webbikeworld.com/r2/digital-tire-pressure-gauge/digital-tire-gauge.htm
 
Jules - I'd hate to carry that thing with me on the road. Too bulky. It's 'only' PSI as well. Wassup with PSI only anyway?

I've been using a Michelin digital that neatly fits into a jacket pocket and it does psi, kPa & bar.
 
On the road? Agh! Yeah, almost forgot about that. I've been doing a little reading though and a lot of these cheaper ones can be off by up to 3psi.

was a titch concerned about that.
 
I always get my gauges checked for accuracy at the local airfield engineering workshop (I know the guys, but shouldn't be too hard to find somewhere to do it)regardless of the cost of the unit. I was given a gauge as a present that was supposedly accurate to +/-0.2PSI. It was actually reading 2PSI high. At least the error was consistent over the range from 20 - 40psi so easy to adjust for.
 
I need a tire gage also. I have several now and all of them show varying pressures which mondo pisses me off.

Here's the difficult point. Who makes one that is indeed accurate and won't fall out of calibration once it hits the floor umpteen times. I don't care how big it is as I don't carry one when riding. Digital is theoretically a good choice but many lack temperature and atmospheric pressure compensation. Ok, aneroid compensation is rarely incorporated and is a minor nit picking point but this does allow a bit of drift.

Not that I'm approaching it from a scientific lab grade mentality but we all have seen up to a + - 5 pound or more difference in readings. I'd rather not buy a .5 or 1% traceable/certified blah blah, steam gage $$$, to use as a calibration tool on the compressor.
 
I have wanted to get one of these.
http://www.aerostich.com/catalog/US/Flaig-Tire-Gauge-p-16390.html
They used to sell the Michelin one which I have and works well.
 
Brett had a really good point about being able to transport it. I got one of these:

http://www.longacreracing.com/catalog/catlist.asp?catid=8

and a cheaper one for travel, at least this way I can compare to see for accuracy.
 
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