Galvanometers; Hydrometers; Circuit testers; Depth gauges; Electric installations for the remote control of industrial operations; Electrical and optical cables; Electronic devices for measuring electric current; Ergometers not for medical purposes; Gasometers; Go/no-go gauges; Level gauges; Measuring cups; Measuring rules; Optical couplers; Optical sensors; Pressure gauges; Printed circuits; Radiation-measuring instruments; Surveying instruments; Surveying machines and instruments; Tape meas...