Make the Wally Skater yourself

Construction drawing of the skater meter


1) Lineal with inch graduation
2) Aluminum tube 10 mm. and 6 mm
3) Plastic or wooden base plate
4) Some sewing thread or fine fishing thread
5) Plumb bob

Cut the aluminum tubes to size
The 10 mm tube will have a slot for the ruler and a 6 mm hole for the top guide.

I turned a ring on the top guide to attach the wire. But of course you can also come up with something else, as long as you can slide it.

Adjusting the Anti Skate Force