New from MGB, a quick and easy way to precisely position the bridge on your next build. This template will all allow you to mark the proper locations for the mounting holes on your bridge onto the box. It works with standard 3,4 and 6 string bridges. It will also work with MGB 3 string XL bridges. 

First mark your box with a centerline then a  line for the scale length. Position the template on over these lines. Drill the appropriate holes along with the ground wire hole.