I wanted an inexpensive, quality, USA made pencil gauge (yeah, I'm but a simple analog type), to populate my extended fleet (family & friends) w/ confidence. came across Milton (S-921). history & design points to it likely being the classic one all the cheap clones attempt to copy - & fail. easy to cross-compare against my own, that I occasionally check at a friends shop. run around $8-10. lotsa tire gauge porn on their site.
https://www.miltonindustries.com/gauges/pencil-pressure/passenger-car-tire-gauge