[ZuffenHouseRules]

Having recently had my first chance to actually use it (and thus confirm the accuracy of TPMS), I can now say this rather pricey but typically Porsche-engineered tool is just as satisfying in operation as it is in appearance:
https://www.suncoastparts.com/product/SKUPCTG.html

Unfortunately it doesn't fit in my open (ashtray-less) center console cubby space, so instead of being out on display (which would be cool) it lives inside its leather case within my glovebox. Maybe someone has an idea for how to stow this on display inside the cabin....

I actually ordered from Amazon to get free shipping, price was comparable to Suncoast IIRC.

 

[GregW]

My gauge lives in the boot--'cause I didn't like the way it looked hanging from the mirror.?

 

[4802]

Having recently had my first chance to actually use it (and thus confirm the accuracy of TPMS), I can now say this rather pricey but typically Porsche-engineered tool is just as satisfying in operation as it is in appearance:
https://www.suncoastparts.com/product/SKUPCTG.html

Unfortunately it doesn't fit in my open (ashtray-less) center console cubby space, so instead of being out on display (which would be cool) it lives inside its leather case within my glovebox. Maybe someone has an idea for how to stow this on display inside the cabin....

I actually ordered from Amazon to get free shipping, price was comparable to Suncoast IIRC.

Not so much Porsche engineered, it's a Moto Meter gauge with the addition of a Porsche logo. They're a very old German company & have been manufacturing gauges for years. My dad owned one when I was still a young kid. http://www.motometer.de/en/products/test-equipment/tyre-pressure-tester/ &https://www.classiccult.com/motometer-tyre-pressure-gauge-western-germany.html