Durable yet Lightweight - The OX tuff metric folding rule is built from solid ABS plastic with a reinforced brass hinge designed for long-lasting durability and reliable performance on site. Centre-Line Marking for Accurate Layout Work - Integrated centre-line simplifies offset measurements, centre-point marking and precise setting out for construction and carpentry tasks. Width of 45mm: Ideal for framing timber measuring 90mm x 45mm, providing versatility for various measuring applications. 0-180° Swivel Hinge for Fast Angle Finding - Flexible central hinge allows accurate angle measuring and transfer, making it ideal for framing, joinery and layout applications. High-Visibility Cyan Finish - Bright cyan colour stands out on busy job sites, helping you quickly locate your measuring tool when you need it most.