CPC Subgroup
G01R 5/32 Wire electrometers; Needle electrometers
Full Title
Instruments for converting a single current or a single voltage into a mechanical displacement > Electrostatic instruments > Wire electrometers; Needle electrometers
G01R 5/32 Instruments for converting a single current or a single voltage into a mechanical displacement > Electrostatic instruments > Wire electrometers; Needle electrometers