The Original Incra Jig

Average reader rating
out of 5
Original Incra Jig


The INCRA Jig that started it all more than twenty years ago has been reissued, and the same qualities that made it such a knockout then are still relevant in workshops today.

The only two moving parts are the locking knob and the single-piece upper carriage. It’s as simple and reliable as your favorite hammer, yet it indexes on 1/32” increments with the same 1/1000” positioning accuracy and repeatability of our top-of-the-line LS Positioners.

The rigid, glass-reinforced resin body consists of upper and lower halves and provides 8” or 200mm of solid fence travel. Our patented incremental racks are installed where the halves of the jig meet, with each rack offering hundreds of teeth on a precise 1/32” spacing. When the clamping knob is tightened, the teeth mesh, causing the fence and carriage to instantly “center up” on perfect multiples of 1/32” five to ten times more precisely than working by eye alone.

By adding a fence and a couple of simple fixtures (either shop-made or purchased as part of the INCRA Jig Fence System), 3/8” box joint and 1/2” dovetails can be produced equally spaced or variably spaced. The 1/2” dovetail template can also be made half-blind, through, sliding, or cornerpost. For even more variety, the 11 box joint templates and 29 dovetail templates from the INCRA Master Reference Guide can be adapted to the Original INCRA Jig to produce literally billions of joinery variations.

Reader Reviews

Accurate but slow

Review Summary

I've had one of these jigs since Incra first came out with them many years ago. I was using it on my router fence. It's super accurate but a little cumbersome to use since you have to tighten and re-tighten the knob to move it along the 1/32" scale. I haven't used it in many years as I've found faster and easier ways to accomplish the tasks I originally got this for.

Detailed Ratings

out of 5





Ease of Use




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