Bismuth-Antimony demonstration thermocouple, by Philip Harris Ltd. 1981 Bismuth-Antimony demonstration thermocouple 1981
Iron eureka thermocouple, temperature sensor, by Robert W. Paul, London, England, 1910-12. Iron-Eureka Thermocouple, Temperature Sensor, 1910-1912 1910-1912
Platinum rhodium thermocouple with one fireclay sheath, by Cambridge Instrument Company Limited, London, England, 1925-29. Platinum Rhodium Thermocouple, 1925-29 1925-1929
Titan thermocouple, 24" long with fireclay sheaths Titan thermocouple, 24" long with fireclay sheaths 1900-1982
Mock-up of Constantin-Manganin thermocouple in dewar flask, c.1950 with some silvering removed to show interior Mock-up of Constantin-Manganin thermocouple 1945-1955