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Title: Thermochrom Crayons (Pencils),. 1950-53 [Go to resource]
Description: Set of 12 thermochrom pencils in a box, by A.W. Faber-Castell, Stein, Nuremburg, Germany, 1950-53. Used for checking surface temperature by colour change on contact with surface, 65-600�C. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: pyrometric temperature indicator Temporal: 1950-1953 Source: Science Museum Creator: A.W. Faber-Castell Identifier: 1953-344 Go to resource More Like this...
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