Simple Circle-Layout Tool
This simple jig makes laying out circles a breeze.
This simple jig makes laying out circles a breeze. Drill a 1/8-in. hole through every inchmark on a ruler or yard-stick. To draw a circle, place a pin through the number 1 into thecenter of your board.Add 1 in. to the radiusof the circle you wish to draw, and insert a pencil into this number. Using the pin as a pivot, rotate the pencil to mark the circle.