Made of high quality aluminum alloy with high precision, high strength and high hardness. 2 types of proportion marked for hardwood or softwood, a 1:5 slope for softwoods and a 1:8 slope for hardwoods. It is marked with a precision scale to help better display size and proportion. Suitable for cork, hardwood and other woods, this dovetail marking gauge is very useful when storing. A practical and perfect tool for woodworkers or beginners, easy to mark accurately. Features: Made of high quality aluminum, durable and sturdy. It is marked with a precision scale to help better display size and proportions. The marker is capable of marking a 1 inch long dovetail. Comes with 2 kinds of proportion, 1:5 ratio is usually used in softwood and 1/8 is usually used in hardwood. --Suitable for softwood, hardwood and other types of wood. A perfect tool for woodworkers or beginners. Specifications: Material: aluminum alloy. Proportion: 1/5, 1/8. Weight: approximately 150g. Uses: woodworking mar king tools Color: black. Length: 63mm. Note: 1:5 for softer wood and 1:8 for harder wood.