Please elaborate on this, since you know so much about tire inhalers, I'd like to see what you build. (Be sure to send your design to BMW, so they can sell it for $200 )
BTW, I don't spend crazy money on tire gauges. I have a cheap $26 bikemaster one that works fine.
https://www.amazon.com/BikeMaster-2-in-1-Tire-Gauge-04-2013/dp/B004RAG6CU