| Reference Number | TPC/5/7/37/1 |
| Title | Suggested Alterations to Drum Revolve Control Position. National Theatre |
| Level | Item |
| Date | 14 December 1973 |
| Description | Evershed Power-Optics Ltd drawing number W6827 issue B. Drawn by R King. Original date 13 December 1973. |
| Extent | 1 drawing |
| Series | Evershed Power-Optics Ltd Drawings |