Features and Benefits:•Use for making fast, repeat angle cuts on rafters and stairs•Material is made of solid brass•Thumbscrews are easy to grip•Attaches to any Empire framing square or rafter squareThe Empire 105 brass stair gauges feature solid brass construction with sure-grip thumb screws for easy tightening. The 105 brass stair gauges attach to any Empire framing or rafter square for making fast, repeat angle cuts on rafters and stair stringers.