Q: I got this one to use it in my ECR 29plus... i compared whit the little gauge in my topeak murph airpump and they are very diferent numbers... the air pump shows almost 40 an the accu-gage shows 17 psi. I was sure i was going to have some diference in them but thats way too much, i will look for another comparation point... Is it posible the accu-gage is uncalibrated?? or just the topeak is way to bad in low pressure?? -Guest
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