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Title: Frost point hygrometer, made by Casella, London, with balanc [Go to resource]
Description: Frost point hygrometer, made by Casella, London, with balanced bridge thermometer indicators, marked 89/91, BBTI MkIIB, marked 828/54, Met ref 1525 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: hygrometer Temporal: 1951 Source: Science Museum Creator: C.F. Casella and Co. Ltd Identifier: 1995-916 Go to resource More Like this...
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