A marking gauge, also known as a scratch gauge, is used in woodworking and metal working to mark out lines for cutting or other operations. The purpose of the gauge is to scribe a line parallel to a reference edge or surface. It is used in joinery and sheet metal operations.The gauge consists of a beam, a headstock, and a scribing or marking implement, typically a pin, knife, pen or wheel. The headstock slides along the beam, and is locked in place by various means: a locking screw, cam lever, or a wedge. The marking implement is fixed to one end of the beam.
Early settlers in Moorabbin Shire had to be self reliant and made their own clothes and tools as they established homes and farms for their families
c1900 A hand made wooden marker gauge