

Our Headstock Centerline Jig is much more than the name implies. Without the keys, it can be used to determine the centerline of your neck by using the graduations placed strategically along the length of the jig. Once the centerline is determined, you can use the jig to easily mark the centerline of your headstock. If you have already routed a truss rod channel, use the jig with the appropriately sized key set in the channel to determine your headstock centerline. There are 5 different key sets to choose from. The key set of your choice is included with the jig. All sizes are also sold separately. We have included a couple of extra key wedges should you misplace any.
This jig is meant to be used with the Graphgear mechanical pencil (SPGMP) which is designed with template use in mind.
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Choose a key set. 1 set is included in the price of the jig. Sets are also sold separately.
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Overview
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Video: Using the Headstock Centerline Tool
The jig is photographed in use above - neck not included.
The jig comes unassembled, but simple assembly instructions are included.
Dimensions of the assembled jig: length - 19", width - 2 1/4", thickness - 1/8"
umm no 1/4 inch key set? was going to buy but this is a problem.
04/08/2023
Centerline jig
I bought this over a year ago, it works really well to mark out the centerline of your headstock even the C/L of the neck b4 you rout the trussrod slot.