Hi. I bout an Amtech stirrup pump with gauge (Stock Code 19455) only today.
The shop had two left and I notice on both of them the gauge was already readon 2.5 bar. So I thought it was normal and got it anyway.

I've tried it on my bicycle tyre and my car tyre and the gauge needle will not budge. I have to assume this will be the case also with the other one in the shop.

Any way to fix this or am I stuck with a pump that don't tell me the acutal pressure I'm pumping my car tyre to?

Any assistance would be appreciated.