| Reference Number | TPC/5/6/164 |
| Title | Personnel Door Solenoid Locks and Hold Open Latches |
| Level | Item |
| Date | 12 December 1974 |
| Description | Mole-Richardson (Stage & Studio Engineering) Ltd drawing number D14/360. Drawn by S G D. Works number 2815/174. |
| Extent | 1 drawing |
| Series | Mole-Richardson (Stage & Studio Engineering) Ltd Drawings |