No longer available Click here for the new equivalent magnetostrictive linear transducers WPP-A, WPA-A Contactless linear position transducer with ONDA magnetostrictive technology. The absence of electrical contact on the cursor eliminates all wear and guarantees almost unlimited life. Compact size for simple installation. Full protection against outside agents for use in harsh environments with high contamination and presence of dust. Excellent linearity, repeatability, resistance to mechanical vibrations and shocks.