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Thermochrom Crayons (Pencils),. 1950-53

Thermochrom Crayons (Pencils),. 1950-53

1950-1953

Maendeleo stove for rural Kenya, 1988

Maendeleo stove for rural Kenya, 1988

1988

Early Platinum Electrical Resistance Thermometer, 1871-1890

Early Platinum Electrical Resistance Thermometer, 1871-1890

1871-1890

Siemens Pyrometer Sensor, 1890

Siemens Pyrometer Sensor, 1890

1890

Fire Clay Temperature Indicator Cone, 1925-31

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Large pottery ladle with short handle

Large pottery ladle with short handle

Fire Clay Temperature Indicator Cone in Stand, 1925-31

Fire Clay Temperature Indicator Cone in Stand, 1925-31

1925-1931

Fire Clay Temperature Indicator Cone, 1925-31

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Fire Clay Temperature Indicator Cone, 1925-31

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Large pottery ladle with short handle

Large pottery ladle with short handle

Fire Clay Temperature Indicator Cone, 1925-31

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Large pottery ladle with short handle

Large pottery ladle with short handle

Fire Clay Temperature Indicator Cone, 1925-31

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Fire Clay Temperature Indicator Cone, 1925-31

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Fire Clay Temperature Indicator Cone, 1925-31

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Large pottery ladle with short handle now broken

Large pottery ladle with short handle now broken

Fire Clay Temperature Indicator Cone, 1925-31

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Calorite stand

Calorite stand

1925-1931

Fire Clay Temperature Indicator Cone, 1925-1931

Fire Clay Temperature Indicator Cone, 1925-1931

1925-1931

Fire Clay Temperature Indicator Stand, 1925-31

Fire Clay Temperature Indicator Stand, 1925-31

1925-1931

Fire Clay Temperature Indicator Cone, 1925-31

Fire Clay Temperature Indicator Cone, 1925-31

1925-1931

Fire Clay Cone Temperature Indicator, 1928-1931

Fire Clay Cone Temperature Indicator, 1928-1931

1928-1931

Platinum electrical resistance thermometer (pyrometer), laboratory pattern, with porcelain tube and fitted with glass tube, by The Cambridge Scientific Instrument Company Limited, Cambridge, England, 1910-14.

Platinum Electrical Resistance Thermometer, 1910-14

1910-1914

Platinum rhodium thermocouple with one fireclay sheath, by Cambridge Instrument Company Limited, London, England, 1925-29.

Platinum Rhodium Thermocouple, 1925-29

1925-1929

Electric pyrometer voltameter, with Leclanche battery, probe fitted with glass tip, separate iron tip, and glass sheath all by Siemens Brothers & Co. Limited , London, England, 1871-1885.

Siemens' Electrical Pyrometer, 1871-1885

1871-1885