The SquiJig 3-in. Tall Framing Jigs, Blue, 2-Pack (model Squi.Jig-3”-Blue) are extra-tall aluminum framing jigs that clamp onto most squares. This is a square-mounted layout jig set designed for stair layout, rafter layout, and metal fabrication fit-up. Each set includes two jigs and their screws.

On lumber they work as stair gauges, a rafter layout stop, a rip guide for a circular saw, or an angle guide on a speed square. They also hold a framing square upright on the stock so you can mark without a second set of hands.

On metal, the 3-in. height gets past the rounded corners of large square tube that throw off a short gauge. The cylinder barrels make it easy to square up round tube, act as a third hand when tacking parts together or lining up a turnbuckle, and let you hang or stand your square right on the material.

Dual slots and cylinder barrels give more mounting options than a standard stair gauge. The slot is 5/16 in. tall and fits square blades up to 0.31 in. (5/16 in.) thick.

Pick these over the 1.5-in. jigs if you do metal fab, work big tube, or want maximum reach on wide stock. They are made in the USA.

The Fab Shop Version

The SquiJig 3-in. Tall Framing Jigs, Blue, 2-Pack do everything the shorter jigs do on lumber and add real value on steel tube.

• Who it's for: Welders, fabricators, and framers who want one jig set for wood and metal.
• Why it stands out: The 3-in. reach and round barrels handle large square tube and round tube that a short gauge cannot.
• Worth knowing: Bulkier than the 1.5-in. jigs, so if you only frame with lumber the shorter set packs smaller.

• Will these fit my square? They fit squares with a blade up to 0.31 in. (5/16 in.) thick.
• How are these different from the 1.5-in. jigs? They are twice as tall, have dual slots and cylinder barrels, and add metal fabrication uses like squaring round tube.