Brizago STG-RG Stair Tread Measuring Jig, Adjustable 10–67 Inches

A stair project with varying tread widths and angles calls for a measuring tool that can adapt to the layout. The Brizago STG-RG adjustable stair tread jig is designed to capture dimensions for stair treads and risers, including straight, angled, and irregular stair shapes.

Its adjustable length spans 10 to 67 inches, while 0°–360° rotation supports measurements at different angles. Set the tool to the work area and lock it in place to transfer the layout for marking and cutting.

Made from aluminum alloy, the jig has clear, double-sided ruler markings and comes with a storage bag for keeping it organized between jobs.

Key features

The adjustable measuring range makes this jig useful across a variety of stair layouts, from standard runs to projects with angled or irregular edges. Instead of resetting separate measurements for each section, you can adjust the tool to the dimensions and angle you need, then secure the setting with its locking knob. This helps keep the layout consistent as you mark the material.

Clear millimeter-scale markings on both sides make readings easier to take from either direction. The 0°–360° rotation measurement adds flexibility when matching an angled edge or transferring a stair profile. Beyond treads and risers, the tool can also support cutting and layout work for shelves, drywall, and partitions.

The aluminum alloy construction provides a sturdy frame for repeated measuring and marking. A non-slip design supports a steady hold during use, and the polished edges are intended to help protect hands and work materials. When the job is done, the included storage bag gives the jig a designated place for storage and transport.

Who it’s for

This measuring jig suits contractors, finish carpenters, and DIYers working on stair installation or renovation. It is especially relevant when a project involves several tread or riser profiles, or when the stair edges are not all square. The adjustable length and rotating measurement setup are also useful for layout tasks involving shelves, drywall, or partitions.

For a one-off straight measurement, a basic measuring approach may be enough. This jig is aimed at work where capturing and transferring a length and angle together is useful. For example, when fitting a tread against an angled wall, you can adjust the tool to match the opening, lock the setting, and use that setup to mark the cut line.

Usage tips

Extend the jig to the span you need, align it with the tread, riser, or other workpiece, and set the angle to follow the edge. Tighten the locking knob before transferring the measurement so the adjustment stays in position while you mark. Read the scale from the side that gives you the clearest view, using the double-sided markings to suit the direction of your layout.

For a run of stairs, repeat the same measuring and locking process for each piece, recording or transferring each setting as you work. Keep the tool in its storage bag between jobs to make it easier to carry and store with your project equipment.

Is it worth it?

The Brizago STG-RG brings adjustable length, full-circle angle measurement, a locking setup, and readable markings into one stair measuring jig. Those features are useful when stair components need to match different widths or angles, and the added applications for shelves, drywall, and partitions give it a role beyond stair work. For stair fitting and layout projects that benefit from transferring a measured profile, it offers a practical way to set up and mark the work.