RION

ELECTRO-ACOUSTIC TRANSDUCERS, MICROPHONES [ AND PIEZO-ELECTRIC GAS IGNITORS; ] MEASURING, RECORDING AND TESTING INSTRUMENTS-NAMELY, SOUND OR NOISE LEVEL METERS, SOUND OR NOISE FREQUENCY ANALYSERS, SOUND OR NOISE LEVEL RECORDERS, SOUND SPECTROGRAPHS, AUDIOMETERS, [ AUDIOMETRIC TEST ROOMS, HEARING AID TESTERS, ] ACOUSTICALLY CALIBRATED SOUND SOURCE APPARATUSES, [ NYSTAGMOGRAPHS, ] VIBRATION METERS, MEASURING INSTRUMENTS RELATING TO ENGINES-NAMELY, [ TACHOMETERS AND KNOCKMETERS, ] VISCOSIMETERS, PARTICLE MEASURING AND COUNTING INSTRUMENTS, ACCELEROMETERS, ACCELERATION PICKUPS, FLUID FLOW VELOCITY/DIRECTION DETECTING AND MEASUIRNG INSTRUMENTS, [ STATIC FIELD MEASURING INSTRUMENTS ] EDUCATIONAL AND SPEECH THERAPY AUDIO TRAINING UNITS

[Hearing Aids, Electro-Palatographs]