What Is This Thing?

Turn the handle and the dish goes up and drops down with a bit of a bang. The item above turns out to be a Liquid Limit Machine. I had to Google this and watch a 5min video to find out what that was and how it works. Brilliant or Obsessive?  You decide... Share the link  https://what-is-this-thingy.blogspot.com/ Got something you can't identify? Want to know what it is? Put a photo here and see what other people think. Got a free moment? Want to help people identify things / display your knowledge of arcane things? Browse the collection and see if you can name that thing. Try Google reverse image search: Go to Google  Click on camera icon Drag image onto search box. Check the result. The more people who know about this site, the better it works. Share the link https://what-is-this-thingy.blogspot.com/