A load cell is a sensor that converts a load or force acting on it into an electronic signal. This electronic signal can be a frequency change, voltage change or current change depending on the type of load cell and circuitry used. The uses & industries for load cell sensors are great: Automotive, Aerospace, Medical, on the Machine and Shop floor, Manufacturing and Robotics. Popular brands of Load Cells and Sensors are Starrett, Chatillon-Ametek and Mecmesin. MSI-Viking Gage is your source for these.