Dewalt Fixed Base Routers come with a clear, LEXAN sub-base which offers optimum bit visibility and base durability. In order to center the sub-base a sub-base concentricity gauge is included. If you insert this into the collet prior to bit installation, it will help you center the sub-base relative to bit location when making your cut line off of the side of the base. The video below demonstrates how this works.
The result is a perfectly centered sub-base, every time. The sub-base accepts standard template-guide bushings to make application-specific setups easy, and you can be confident that the router bit is perfectly centered.
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