Hot-blast Pyrometer, Hobson's patent, 1890-1897
- Materials:
- wood (unidentified) , brass (copper, zinc alloy) , copper (metal) , glass and mercury
- Object Number:
- 1897-134 Pt1
- type:
- pyrometer and thermometer
Hobson's hot-blast pyrometer with thermometer in tin case, by J. Casartelli and Son, Manchester, 1895-1897.