MK2 Ruler 320mm Each Benchdogs ruler is machined from aircraft-grade aluminium and anodised, which protects against scratches and makes them durable. The Benchdogs ruler is the most accurate way to draw straight, parallel lines. It is designed to be the straightest, heaviest and flattest ruler available, making it perfect for all woodworking projects.Sizes Available:320mm, 640mm and 960mmPlease note: The joining of these rulers extends the 32mm Holes for longer panels. This is not intended for ruler markings or straight edges. The MK2 rulers now offer a 6mm hole for the use of a 4mm and 5mm drill guide.If ordering the ruler marking pins, you need the MK2 6mm version. Optional Accessories:Joining plateAdjustable Ruler StopHook stopRuler Marking PinsProudly made in Britain by Benchdog Tools 🇬🇧