A g measurematics manufactures and presents linear displacement transducers [dc lvdt] with 4-20 ma output operable from a single 18 to 32v dc supply. These transducers are available in various ranges, like 25, 50, 100, 150 mm. All signal conditioning is housed within lvdt housing. They find industrial applications where interfacing to normal data logger, plcs or controllers is desired. Also offered are standard ac lvdts, precision gauge heads, through bore lvdts, miniature lvdts, waterproof lvdts and special purpose lvdts for defence and aerospace applications. Associated electronics includes signal conditioning cards, digital indicators, microprocessor based position controllers and data acquisition systems.