Kern fcb series compact bench scale kern fcb 3k01 the kern fcb 3k01 bench scales have been designed with mobility in mind and feature battery operation compact size and low weight the scales are ideal for use in many locations such as production warehouse and despatch departments the scales use kerns pre tare function which allows the manual subtraction of a known container weight making it easy to weigh only the contents of a container which is useful for checking fill levelst