![](https://coimages.sciencemuseumgroup.org.uk/423/789/medium_thumbnail_1994_8772__0004_.jpg)
Block instrument (permissive indicating)
![Tyer's 1-needle 8-position cooperative (up to 6 trains) block](https://coimages.sciencemuseumgroup.org.uk/423/551/small_thumbnail_1964_330_37__0007_.jpg)
![Tyer's 1-needle 8-position cooperative (up to 6 trains) block](https://coimages.sciencemuseumgroup.org.uk/423/554/small_thumbnail_1964_330_37__0009_.jpg)
![Tyer's 1-needle 8-position cooperative (up to 6 trains) block](https://coimages.sciencemuseumgroup.org.uk/423/557/small_thumbnail_1964_330_37__0003_.jpg)
![Tyer's 1-needle 8-position cooperative (up to 6 trains) block](https://coimages.sciencemuseumgroup.org.uk/423/556/small_thumbnail_1964_330_37__0001_.jpg)
![Tyer's 1-needle 8-position cooperative (up to 6 trains) block](https://coimages.sciencemuseumgroup.org.uk/423/553/small_thumbnail_1964_330_37__0010_.jpg)
![Tyer's 1-needle 8-position cooperative (up to 6 trains) block](https://coimages.sciencemuseumgroup.org.uk/423/552/small_thumbnail_1964_330_37__0005_.jpg)
![Tyer's 1-needle 8-position cooperative (up to 6 trains) block](https://coimages.sciencemuseumgroup.org.uk/423/555/small_thumbnail_1964_330_37__0011_.jpg)
![1964-330_37_(0001)](https://coimages.sciencemuseumgroup.org.uk/299/507/small_thumbnail_1964_330_37__0001_.jpg)
Tyer's 1-needle 8-position cooperative (up to 6 trains) block instrument with tapper and bakelite circular commutator/ permissive window underneath. BR (LYR style). Pattern B2009.
Details
- Category:
- Signalling & Telecommunications
- Object Number:
- 1964-330/37
- type:
- block instrument
- credit:
- Tyer and Company Limited