[temporary alphabetical list: measuring devices]galvanoscopeselectrical & magnetic measurement deviceselectrical instrumentsinductometersmeggersmilliammetersmillivoltmetersmagnetic instrumentsmagnetic shieldsmultimetersohmetersphase metersplatymetersvan de graaf generatorswater gaugeswavemeterswheatstone bridgesspring measuresstrain indicatorsthermoammetersmeasuring devices