Three minature platinum resistance thermometers, 20th century.
Miniature platinum resistance thermometer, one of three, by Rosemount Engineering Company Limited, E10-005, 80 PF 4F, E13050, Minneapolis, Minnesota, United States c.1978.
Miniature platinum resistance thermometer, one of three, by Rosemount Engineering Company Limited, E10-005, 80 PF 4F, E13050, Minneapolis, Minnesota, United States c.1978.