This product, like many people have experienced, is very well made, and great to have around, and many are working at 30 years of age. I have no real complaints about the quality of this product for my primary use, which is speedily checking the pressure and airing up the tires for my trucks, trailers, daily drivers.  The only flaw with my gauge, which doesn't bother me, is it tends to read about three pounds high, which I just started mentally compensating for.  For stuff I am concerned with getting very accurate, or low pressure readings, (motorcycle, ATV, drag slicks, high performance radials) I still use a quality gauge to check the pressures anyway.