Inflation has hit the gauge market!

https://www.harborfreight.com/fuel-pump-and-vacuum-tester-62637.html?cid=paid_google|||62637&utm_source=bing&utm_medium=cpc&utm_campaign=&utm_content=&msclkid=2f59a26712f61a4da9a1c207a257d315

Still, not likely to break the bank, and they last forever. I'm still using a similar tool I bought in the 1970's!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!