The Woodpeckers DSQ-ST-20 in-DEXABLE Double Square - Standard - 6 Inch Blade is a precision layout and measuring square built for woodworking, machine setup, and assembly checks. This is a double square designed for accurate marking, depth checking, setup work, and edge-referenced measurement. Model Number: DSQ-ST-20. If you want a compact square that does more than just check 90 degrees, this one is built around repeatable accuracy and faster layout.

The big story with this square is the in-DEXABLE system. Woodpeckers added laser-cut scribing guides every 1/16 inch along the blade, which gives you a fast way to mark parallel lines without setting up a separate gauge. The spring-loaded index pin answers the obvious problem with any adjustable square: where do you start from when the head moves? Lock the head at any full inch, and the scribing guides have a known reference point for consistent layout.

The blade itself is stainless steel with a satin finish, and the graduations are laser engraved rather than lightly printed on. One edge reads in 1/16 inch increments and the other in 1/32 inch increments, so you can work quickly when rough layout is enough or read finer when the job calls for it. Woodpeckers states a total accumulated error of .004 inch over the full blade length, which is the kind of tolerance that makes sense for joinery layout, setup work, and checking machine positions.

The head is machined from aircraft-grade aluminum instead of cast iron. That matters because you get a tool that is thick and stable without carrying extra dead weight around the bench. The anodized head resists rust, the deeper shoulder helps keep the square registered on the edge of the stock, and the sliding head support is there to keep the tool planted during use instead of feeling like it needs a third hand to hold it in place.

In day-to-day shop use, a compact 6 inch blade makes this double square especially useful where a full-size combination square feels oversized. It is a better fit for cabinet parts, smaller assemblies, router table setup, blade and bit height checks, and quick transfer marks at the bench. You still get the same in-DEXABLE layout idea found across the larger system, just in a format that is easier to grab for short, precise work.

The Woodpeckers DSQ-ST-20 in-DEXABLE Double Square - Standard - 6 Inch Blade also comes with a wall-mountable Rack-It, which is a practical touch if you actually care about keeping precision tools protected and easy to find. This is not a throw-it-in-the-bottom-of-the-toolbox type of measuring tool. It is for woodworkers, cabinetmakers, and setup-minded users who want a square that stays readable, stays accurate, and adds real layout capability beyond basic measuring.

Woodpeckers DSQ-ST-20 in-DEXABLE Double Square - Standard - 6 Inch Blade is a smart bench-size layout tool

If you do careful woodworking, this is the kind of square that actually changes how fast and how clean your layout work goes.

• Who it's for: Woodworkers, cabinetmakers, and anyone doing setup or inspection work on smaller parts where a compact double square makes more sense than a full-size combination square.
• Why it stands out: The indexed head and built-in 1/16 inch scribing guides are not gimmicks. They solve a real layout problem and make repeat work quicker without giving up precision.
• Worth knowing: This is a precision shop tool first. The 6 inch blade is ideal for close work, but if most of your measuring is on larger panels or wider parts, you may want one of the longer in-DEXABLE squares alongside it.

• What kind of tool is this? This is a double square used for layout, measuring, depth checks, assembly checks, and machine setup.
• What makes the in-DEXABLE system different? It uses a spring-loaded index pin that locks the head at every full inch, which gives the scribing guides a repeatable starting point.
• How are the scales marked? The stainless steel blade has laser-engraved scales with 1/16 inch graduations on one edge and 1/32 inch graduations on the other.
• Where is it made? Woodpeckers states this square is made in Strongsville, Ohio, USA.