Design and Technology Marking and Measuring Tools
Steel Rule It is used for measuring, marking and testing flatness. It is usually graduated in both inches and millimeters. Zero end design is used for setting gauges and measuring internal size The common size we use in the workshop is 300mm long. Longer steel rule such as 600mm and 1000mm are also available for large workpieces.
Engineer’s Square Try square is for woodwork while Engineer’s square is for metalwork. They are for marking and testing right angles. They are also used to test squareness and check the internal and external angles of a workpiece.
Scriber It is used for marking lines on a metallic, or plastic surfaces. It is always used with a try square or steel rule for marking straight lines. Chalk or pigment can be added on the surface before marking in order to show th lines more clearly.
Hacksaw It is used for making straight cuts in metal and plastic materials.
Hacksaw The blade with the teeth pointing forward is held tightly by a wing nut. The blade can also be rotated to suit different sawing works.
Hacksaw Hold the work in the vice and keep the cut line vertical and close to the jaws to prevent vibration. In cutting long workpieces, the saw blade should be turned 90º to the frame.
Coping Saw It is used for sawing curves in thin wood, plastics and soft metal. The saw teeth must be pointing towards the handle to avoid breakage. The blade can be turned for sawing along long wood pieces.