Yup, I have a little brass one about the same size. Not expensive, but handy at the bench. I also just recently ran across some plastic calipers on sale for 2 dollars a piece. Bought a six-pack and can sprinkle them around without fear of losing-dropping-loaning-breaking them. Again, not fancy but great for checking a rough stock dimension or something.
That reminds me of the wooden workbench with woodworking tools I received as a birthday gift when i was 5 or 6yrs old! It had kid sized "real" hand tools that included a wooden caliper that looked just like the one in your picture. The memories you just helped me recall were misplaced long ago in my "filing cabinet" aka my brain, lol, but the wonderful feeling of making something on my own for the very first time came rushing back as the memories came to the surface so Thank you for sharing.