Specimen of steel produced by the Basic or Thomas-Gilchrist process
- Made:
- 1877
Specimen of steel produced by the Basic or Thomas-Gilchrist process, 1877, 1-2.25" x 0. 875" bar folded four times
Specimen of steel produced by the Basic or Thomas-Gilchrist process, 1877, 1-2.25" x 0. 875" bar folded four times
