![](https://coimages.sciencemuseumgroup.org.uk/711/82/medium_thumbnail_2023_0467__0010_.jpg)
Specimen of steel produced by the Basic or Thomas-Gilchrist process
- Made:
- 1877
![Specimen of steel produced by the Basic or Thomas-Gilchrist](https://coimages.sciencemuseumgroup.org.uk/409/192/medium_smg00089942.jpg)
Specimen of steel produced by the Basic or Thomas-Gilchrist process, 1877, 1.5" x 1" flat bar folded double
Specimen of steel produced by the Basic or Thomas-Gilchrist process, 1877, 1.5" x 1" flat bar folded double