I only need it for about 30 mins I can leave a deposit I would buy one but I don't want to get a cheap one so id rather barrow one format bit..

Let me know if you have anything I could use
Thanks

If no one comes up with one for ya, I bought and used the Harbor Freight Leakdown Tester. It works just fine unless you bury the % gauge.

It tells you to rotate the adjustment knob all the way to the right. If you don't do it and hook it to your air supply, it will bury the needle on the % gauge. Once that happens, either take it back if it hasn't been forever or trade it for a new one ... they're supposedly guaranteed.

Maybe cheap, but it did the job.