| Reference Number | TPC/5/7/8 |
| Title | External Cabling Diagram for the Drum Revolve The National Theatre, London |
| Level | Item |
| Date | 12 February 1974 |
| Description | Evershed Power-Optics Ltd drawing number V4258 issue C. |
| Extent | 1 drawing |
| Series | Evershed Power-Optics Ltd Drawings |