HP Agilent 3457A 3.5 to 6.5 Digit DMM with Extended Resolution to 7.5 DigitsCondition: Used The HP 3457A has seven functions with 3' 2 to 6' 2 digits of resolution extendable to 7' z digits at reading rates from 1 reading every 2 seconds to 1350 rds s and basic DC volts accuracy as good as 5 ppm. In addition, the input of the HP 3457A can be expanded up to ten channels with either of the optional plug in multiplexer assemblies. On the bench, the front panel operation is extremely flexible and comprehensive. In systems, the