A linear encoder is a device used to measure the position of an object along a straight line. It converts the physical movement of the object into an electrical signal, which can then be interpreted by a computer or control system. This technology is commonly used in various applications, such as robotics, CNC machines, and industrial automation. Linear encoders can be categorized into two main types: incremental and absolute. Incremental encoders provide information about the change in position, while absolute encoders give a unique position value at any point along the path. Both types help ensure precise movement and control in machinery and equipment.