Easy to make Slide ruler for iPad.
Works with the free Line and Ink apps from Adobe.
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Step 1: Supplies Needed
Conductive foam (Found at electronics or computer stores)
4 inch metal screw or rode.
- Cut the conductive foam into 2 pieces of 3/4" (20mm) square and 1/2" (12mm) thick
- Pierce a hole in the middle of the 2 pieces of foam.
- Thread the 2 pieces on the screw, 1 piece all the way through and the other just at the end.
- Download the free Line or Sketch by Adobe from the app store and start drawing with your new digital ruler.
- Have fun.