Hi,
It is a superb little unit for doing basic leak checks of a pitot head or a static line or for simple instument checks. Very compact and portable and once you have entered and saved the test parameters it is very simple to use, literally press the green button and wait for it to say Pass.
Its been a good few years since I used one but I think it can only do pitot or static output, if you are going to need both applied to the aircraft i dont think this will work out. I paid £150 for it off ebay at the time, they seem to be going for 10 times that now, just checked. Looks the same, military surplus, brand new never used. The battery pack on the one i bought died and the replacment price was silly so i just split it open and soldered new cells in.