I have a set of those that I purchased many moons ago specifically designed for woodworking. My marking wheels are called pounce wheels and are sharp pointed little wheels that you use to follow a pattern and pierce it with the little points. Then you are supposed to sprinkle chalk dust through the little holes and voila' you have design on your wood. This sprinkling was done with a chalk filled pounce pouch that you dabbed on the pattern. When I made wooden toys I used them a lot until I made wooden patterns that I could trace.
Now how's that for useless information.....:eusa_thin