Starrett Combination Square

The Starrett Combination Square is a versatile tool that replaces a wide range of single-use measuring instruments - solid try squares, 45-degree miters, depth gauges, height gauges, marking or scribing gauges, levels, and plumbs. The steel rule can be used as a precision straight edge. Use it when measuring depth, height, or angles for miter cuts.

Each Starrett Combination Square features a photo-engraved, hardened, and tempered steel rule (or blade), mounted on an adjustable square head. All the squares we stock come with a satin chrome finished blade which is very easy to read. The square heads are made from cast iron or forged, hardened steel (never cheap plastic or die-cast imitations).

The most popular size is with a 12" blade although people find the 6" and 18" useful in many situations. We stock squares with both cast iron heads - which is what we typically use, and also in a forged steel head that is great for shops with concrete floors.

The blades of the 12", 18", and 24" squares are interchangeable but the 6" and 4" blades are thinner and do not fit the standard head.