I'm using this and find it handy. No pressure release for overfill. Calibration is always an issue and unless you have a known source to check against you've got to assume some degree of error. My thoughts are if you fill to the same pressure all the way around and hope for repeatability. Tread wear will indicate if you've got it right.

Calibration drift is a whole other topic. Show me one that isn't made in China regardless of brand.

https://www.amazon.ca/gp/product/B08...?ie=UTF8&psc=1