Subclass 1/12: Details of instruments or arrangements of the types included in groups G01R 5/00-G01R 13/00 and G01R 31/00 (constructional details particular to arrangements for measuring the electric consumption G01R 11/02) General constructional details (details of a kind applicable to measuring arrangements not specially adapted for a specific variable G01D 7/00) Arrangements of bearings of strip or wire bearings