| Reference Number | TPC/5/6/154 |
| Title | Electrical Circuit Two Speed Hand Rail |
| Level | File |
| Date | c 1974-11 October 1978 |
| Description | Mole-Richardson (Stage & Studio Engineering) Ltd drawing number D14-329, unnumbered issue and issue B. |
| Extent | 2 drawings |
| Series | Mole-Richardson (Stage & Studio Engineering) Ltd Drawings |