Quoted message said:Jim Smith said:wle said:would it be possible to make a pressure gauge that
you don;t have to put on the valve stem?i am thinking, just press it on the tire body somewhere and
it displays the pressure.seems simple.
something could sense the total force being applied.
something else could sense the area of the tire being contacted.
divide the two numbers, voila, pounds per square inch..That is a common way to measure pressure inside of eyeballs.
http://www.medisave.co.uk/images/Schioztz-Tonometer.jpg
Should be able to adapt it to tires. But hey, this is the 21st
century, why not push on the tire with a puff of air and measure the
response with a laser interferometer, just because you can.Dear Jim,
As I recall, glaucoma testing is intended to notice when
intra-ocular pressure soars from a normal 10-20 mm Hg to
23-25 mm Hg--a rather small, delicate measurement.There might be some minor technical problems adapting the
air-puff method to measuring intra-tubular pressures, which
run around 5,200 mm Hg.But using a 125 psi air compressor's nozzle to power the
puff against the tire could be the solution.
Hmm, it occured to me that eyeballs are also more shiny than tires
too. Maybe the puff of air wasn't such a good idea after all.