| Reference Number | TPC/5/7/43 |
| Title | Drum Revolve Control Equipment - National Theatre (Upper) Ref. Co-ordinates H-7 67.25 Level |
| Level | Item |
| Date | 21 January 1975 |
| Description | Evershed Power-Optics Ltd drawing number W6944 issue A sheet 2 of 2. Drawn by R King. Original date 15 January 1975. |
| Extent | 1 drawing |
| Series | Evershed Power-Optics Ltd Drawings |