Renovating an old wooden staircase is one of the most ambitious DIY projects. But with the stair gauge, measuring the treads is drastically simplified, even for spiral staircases in old buildings: uneven angles, curves and the consideration of expansion joints and material allowances are mastered with ease. The stair gauge combines the advantages of a stair spider with those of a conventional template or angle mould. Integrated expansion joint wedges and adapters for adding material, e.g. for the treads, round off the set. High-quality screws with wing nuts hold the template securely in position so that you can transfer the measurements safely and accurately to the workpiece.