Based on this product's specifications, here are some alternatives and similar models
Angle Square BOXER 300 mm - BOXER kątownik 300 mm
Summary description:
BOXER kątownik 300 mm is a 300 mm angle square from BOXER designed for measuring and marking right angles and straight edges in woodworking, metalworking and construction tasks. The tool provides a fixed 90° reference and a straight 300 mm edge for layout, checking squareness, and transferring measurements in workshops and on-site jobs.