A linear metre is a unit of measurement used to quantify length in a straight line. It is equivalent to one metre in length, but differs from a square metre in that it only measures the distance along one axis. This term is commonly used in construction and manufacturing industries to determine the amount of material needed for a project, such as wood, fabric, or piping. It is also used in the retail industry to measure and price items sold by length, such as fabric, carpet, or wallpaper. The linear metre is a versatile unit of measurement that allows for precise and efficient calculations in various fields.