2 kinds of proportion marked for hardwood or softwood : 1 : 5 , 1 : 8 , machined for Graduated measurement scale has also been etched onto each of sides Made from billet of aluminium , one-piece cutting process Dovetail marker is a great handy little tool for woodworker , easy to out accurate dovetails , make quick and accurate dovetail layout out accurately with either slopes for soft and hard well prepared woods 2 kinds of cutter meet your different needs , 8 inch Precision-ground steel rod , graduated 1 mm / 1 / 25 inch increments for easy reference The wheel marking gauge is a indispensable gadget when marking out jointery with machined body and knurled nut It is a value and must have tool set for either beginners or experienced woodworkers and for woodworking lovers, Manufacturer: Watreketal