[ LEVEL INDICATORS FOR OILS; ELECTRIC PLUGS, OPTICAL FILTERS; LEVEL GAUGE INDICATOR, ELECTRIC LEVEL INDICATOR; PHOTOGRAPHIC AND CINEMATOGRAPHIC CAMERAS AND PARTS THEREOF, MAGNIFIERS, MEASURING CAMERAS, TELEMETERS, OPTICAL SCANNERS, BINOCULARS, DIRECTIONAL COMPASSES; ELECTRONIC ADAPTERS, ELECTRICITY CONDUITS, ELECTRICAL CONDUCTORS, ELECTRONIC MOTOR SWITCHES FOR SWITCHING OFF MOTORS, ELECTRIC TRANSFORMERS, ELECTRIC ACCUMULATORS, CONTROL VALVES FOR REGULATING AND CONTROLLING ELECTRICITY; APPARAT...