G01D 5/58

Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using means specified in two or more of groups [CPC: G01D5/02], [CPC: G01D5/12], [CPC: G01D5/26], [CPC: G01D5/42], and [CPC: G01D5/48] using optical means, i.e. using infra-red, visible or ultra-violet light