These optional magnetic cursors (metric) for the AS-24v3 Adjustable Square will allow you to reference individual graduations to speed layout amongst multiple boards. They are easy to adjust, stay put, and can easily be removed when not needed.
The graduations are laser etched on the anodized aluminum beveled surface which will prevent as much parallax error as possible. The notch also lets you quickly mark with a pencil on your centerline and also allows the square to be used as a panel gauge.
Like the other Bridge City Tool Works tools that we sell, this tool is designed by BCT in Portland, Oregon, USA, but manufactured under exclusive license by an ISO 9001 certified company in China. This arrangement results in a well designed, high quality tool that is available at a reasonable price.