Sensors; temperature sensors; tread depth probes; pressure sensors; readers; surface acoustic wave sensors and readers; radio frequency identification readers; data collection apparatus and instruments; data transmitting and receiving apparatus and instruments; data processing apparatus and instruments; measuring, testing, inspection and monitoring apparatus and instruments; transducers; surface acoustic wave devices; electronic apparatus and instruments incorporating surface acoustic wave devices; electronic remote interrogation apparatus; antennae; parts and fittings for all the aforesaid goods