Attach to framing squares and rafter squares to save you valuable time on repeated cuts on both staiEach gauge has a 1" diameterThumbscrews provide you with an excellent hold at all timesHandy chalking tools with simple design that get carpenters' work done efficientlyPerfect for identical angled cuts on stairs Craftsman Brass Stair Gauge 2 Pack The brass stair gauge set of two from Craftsman makes working on stairs or rafters so much easier. The stair gauges attach to framing squares and rafter squares to save you valuable time on repeated cuts on both stairs and rafters. That means you get done your carpentry job sooner than imagined. The stair gauges come in a high-value two-pack from Craftsman, a leading brand in the tool industry. Each gauge has a 1" diameter. The brass finish on the Craftsman brass stair gauge set provides strength and durability. When you use the gauges, notice how the thumbscrews provide you with an excellent hold at all times. When you have to make several identical angled cuts, these chalking tools are certainly handy to have on hand. They are simple in design and get carpenters' work done on the stairs quickly, without ever compromising on the quality of the project.