This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
Procure a cork having the same diameter as the knob on the maulstick and make a hole in the center so that
The Sliding Cork and Knob Raises the Stick so that It may be Used as a Ruler
it will slide on the stick. This is very handy for using the stick as a ruler, as it forms a sliding; rest.