Very interesting. I have seen a lot of old tools but had no idea they would/could test the wiper arm pressure. One more item I am going to be looking for at the flea market before it is lost to history.
I could make a killing with that thing. Little advertising on FB and I am sure there would be 100's of idiots rolling in to have their WP pressure tested. I can upsell blinker fluid, muffler bearings, etc.
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
It's like a scale to find fat fleas.
There was lots of cool old stuff back then. Similar to fan belt tension gauges.
Kevin Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com] #2 - '29 Ford pickup restored from the ground up. First car '29 Ford Special Coupe Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
It would be a cool tool to test the aftermarket wiper arm against a stock wiper arm. My impression has been the the replacement arms come with a way too beefy of a spring. That gizmo would confirm or disprove that assumption.