| Reference Number | TPC/2/3/5 |
| Title | Typical Harmonic Output Voltages Expressed as Percentages of Fundamental Component |
| Level | Item |
| Date | c 1960-c 1970 |
| Description | Graph for Thorn 5kW Dimmers Type LA130. Found next to schedule number 904/SC16. |
| Extent | 1 sheet |
| Series | Standardised Paperwork - Letters, Contracts, Schedules and Specfications |