Features: Aluminium profited mitre heel. Available in 140 x 250mm, 200 x 300mm, 200 x 400mm. Extruded aluminium stock is triple riveted to the blade for strength and accuracy. High visibility photo etched graduated stainless steel blade engraved with deep hollow (GRAVEMAT procedure). mm graduations on both sides. Stock bevelled for setting out both 90? and 45? angles.