measure the tank weight with square or rectangular tanks it is presently preferred to use four weigh bars one at each corner of the tank fig4 and 5 show how round fig4 and rectangular fig5 tanks are mounted to the frame of paint truck 10 referring to fig4 the frame of paint truck 10 is referenced generally by reference numeral 48 and more specifically by longitudinal members 40 and transverse members 42 an additional transverse member 44 is added to provide support to frame 48 and to provide location on which one of flanges 46 can be mounted three flanges 46 are mounted to frame 48 in a generally circular configuration mounting brackets 64 fig6 attach to flanges 46 referring to fig5 frame 48 includes longitudinal members 40 and transverse members 42 two additional transverse members 44 are added to provide support for frame 48 and to provide locations on which to mount flanges 46 four flanges 46 are mounted as shown mounting brackets 64 fig6 attach to flanges 46 fig7 is a bottom view of round tank 12 flange 74 is attached to round tank 12 support bracket 62 fig6 attaches to flange 74 thereby securing round tank 12 to weigh bar 30 the voltage values gathered by the weigh bars at each tank are translated into weight readings by a processor such as a weigh bar.