Interlocking Electric Indicators worked by policemen at North and South approaches
- Made:
- 1894-05-25
![Interlocking Electric Indicators worked by policemen at North and South approaches](https://coimages.sciencemuseumgroup.org.uk/123/470/medium_d153225.jpg)
Index number 3497.
Details
- Extent:
-
207
309
- Identifier:
- MSP/0140/14
- Access:
- Open Access
- copyright:
-
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