AN ULTRASONIC TRANSDUCER, CONSISTING OF AN INTERNAL CERAMIC CONE AND ALUMINIUM HOUSING, USED IN A CABLE HEIGHT METER TO MEASURE THE HEIGHT OF OVERHEAD CABLES THROUGH SOUND WAVES. RESONANT FREQUENCY: 25KHZ; EXTERNAL DIAMETER: 16.2 MM; EXTERNAL HEIGHT: 12 MM.

CLASSIFICATION IS DETERMINED BY THE PROVISIONS OF THE GENERAL RULES 1 AND 6 FOR THE INTERPRETATION OF THE COMBINED NOMENCLATURE; THE TEXT OF CODES 9031, 9031 80, 9031 80 38; THE HARMONISED SYSTEM EXPLANATORY NOTES TO HEADING 9031;