File:NCC block.jpg
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Summary
[edit]This is a photograph of a Tyer's 3-position one-wire absolute block instrument in Carrickfergus signal cabin. The photograph was taken by E.N. Calvert-Harrison.
Licensing
[edit]I, the copyright holder of this work, hereby publish it under the following licenses:
 | Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. |
   | This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 License. This licensing tag was added to this file as part of the GFDL licensing update. |
| | This work is licensed under the Creative Commons Attribution 2.5 License. |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 08:25, 5 June 2007 | | 594 × 598 (40 KB) | Geologue (talk | contribs) | This is a photograph of a Tyer's 3-position block instrument in Carrickfergus signal cabin. The photograph was taken by E.N. Calvert-Harrison. |
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