Kern hfb series dual display pro hanging crane scale kern hfb 300k100 the kern hfb 300k100 is a dual display pro hanging crane scale which is robust and extremely accurate it is suitable for use in any hanging weighing application up to 300kgthe hanging scale can even be controlled via a remote control included as standard allowing the user to adjust all functions apart from onoff from a distance of up to 20m away from the unit it features an lcd screen on both the front and back