Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site ttidcb.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!bellcore!decvax!linus!philabs!ttidca!ttidcb!jackson
From: jackson@ttidcb.UUCP (Dick Jackson)
Newsgroups: net.physics
Subject: How Do Tire Guages Work?
Message-ID: <626@ttidcb.UUCP>
Date: Thu, 16-Jan-86 15:45:28 EST
Article-I.D.: ttidcb.626
Posted: Thu Jan 16 15:45:28 1986
Date-Received: Sat, 18-Jan-86 08:15:54 EST
Organization: TTI, Santa Monica, CA.
Lines: 13

*
*
*
For the nth time I used one of those pocket tire gauges last night and
wondered how they worked. You press the "valve" end onto the valve, there
is a quick hiss (which then stops) and the graduated rod shoots out to
a length proportionate to the pressure (with some offset I think).

I tried to see if there was a taper on the rod, if so it was very small.
The gauges are inexpensive, therefore relatively easy to make (no high
precision?). I cannot figure out how they work. Anyone know?

Dick Jackson