Sooner or later you will make a mounting panel from FR4 or plastic material or you might make a DIY PCB.
Marking and drilling the corner mounting holes can be a pain.
This jig makes equally spaced holes fast and easy to drill.
All you have to do is make the jig ahead of time 
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After drilling, save one of the work pieces and use it later as a setup template.
Correction: Angle stop is 1.5” long.
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