Head on over to Make to check out my review of the Mnpctech Modder Ruler.
Mnpctech Case Modding Ruler is a Handy Layout Tool & Sizing Gauge
Mnpctech’s Modder Ruler & Gauge is a ruler, a sizing gauge, a layout tool, a reference chart, and quite a bit more. If you’re into case modding, you’ll definitely want to take a closer look at this. The Modder Ruler is also handy for smaller scale robotics, electronics, and other such projects.