CPC Subgroup
G01R 1/38 Arrangements for altering the indicating characteristic, e.g. by modifying the air gap
Full Title
Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00 (constructional details particular to arrangements for measuring the electric consumption G01R11/02) > Arrangements for altering the indicating characteristic, e.g. by modifying the air gap