The 400mm bahco b series try square is the largest size in the range, providing maximum reach for substantial workpieces, large timber sections, and major construction projects. This carpenter's square is punched out of quality steel in a single piece, ensuring true 90° precision even across its extended length. The 400mm reach is invaluable for professional carpenters, shopfitters, and construction tradespeople working with wide boards, large panels, or structural timbers where accuracy over greater distances is essential. For accurate marking of 45° and 90° angles on these substantial workpieces, this try square delivers the extended capability required without compromising on precision. Despite being the longest variant, the square remains well balanced and stable when placed on the surface, maintaining control and accuracy throughout use. The easy to read scale on both sides ensures clear measurements across the full length, whilst the rust protected black finish provides lasting durability in demanding professional environments. Features and benefits bull 400mm length for maximum reach on large workpieces bull single piece steel construction for unwavering 90° precision bull accurate marking of 45° and 90° angles bull well balanced and stable despite extended size bull easy to read dual sided scale bull rust protected black finish for professional longevity specifications size mm steel blade material 400 blade steel length400mm height 170mm