This metal stopper by Shinwa is specifically designed for use with carpenter's squares measuring 20 mm in width, providing added stability during measurements.
The built-in scale allows for measurements with a precision of up to 0.1 mm, making it ideal for detailed tasks.
With this stopper, a carpenter's square can also be used for accurately measuring 45-degree angles, ensuring consistent and repeatable results. Additionally, the stopper can be flipped and attached to the square to precisely measure the height of an object.