Grey Scribing Grid

To help you create custom scribing guides. cut off a small section of the template, place it on the surface you want to scribe, and draw the scribe lines onto the template. Scribe right through the decal and into the plastic. 

The grey grid will show up on a variety of colours, and allows you to create consistent scribe lines.

It can also be used as a drill guide for drilling holes at consistent intervals.