Section 313-01: Detecting and indicating instruments |  |
| 313-01-11 | | insulation resistance meter |  |
| 313-01-23 | | insulation fault detecting instrument |  |
| 313-01-29 | | magnetic detector for lightning currents |  |
Section 313-02: Recorders |  |
| 313-02-15 | | (analogue) magnetic recorder |  |
Section 313-03: Transducers |  |
| 313-03-01 | | (electrical measuring) transducer |  |
| 313-03-05 | | reactive power transducer |  |
| 313-03-10 | | transducer with offset zero |  |
| 313-03-11 | | transducer with suppressed zero |  |
| 313-03-12 | | single element transducer |  |
Section 313-04: Stabilized power supplies |  |
| 313-04-01 | | constant voltage power supply |  |
| 313-04-02 | | constant current power supply |  |
| 313-04-03 | | constant voltage/constant current power supply |  |
Section 313-05: Oscilloscopes |  |
| 313-05-01 | | (electron beam) oscilloscope |  |
Section 313-06: Energy meters |  |
| 313-06-08 | | meter with maximum demand indicator |  |
Section 313-07: Signal generators |  |
| 313-07-01 | | amplitude modulated signal generator |  |
| 313-07-02 | | frequency modulated signal generator |  |
Section 313-08: Measuring bridges |  |
Section 313-09: Accessories |  |
| 313-09-01 | | interchangeable accessory |  |
| 313-09-02 | | accessory of limited interchangeability |  |
| 313-09-03 | | non-interchangeable accessory |  |
| 313-09-10 | | calibrated instrument lead |  |