Non-Linear Systems:
| Model | Date | Group | Description |
|---|---|---|---|
| LM-3.5A | June 1977 | Digital multimeter | Three and one half digit Multimeter |
| LM-3A | June 1977 | Digital multimeter | Three digit Multimeter |
| LM-40A | June 1979 | Digital multimeter | Four digit Multimeter |
| LM-4A | June 1979 | Digital multimeter | |
| LN-4A | June 1977 | Digital multimeter | Four digit Multimeter |
