pH meter type D-449-A, with electrodes and tray

Made:: 1948

maker:: Muirhead and Company Limited

pH meter type D-449-A, no. 152936, by Muirhead and Co. Ltd., patent 581270, February 1948, with electrodes and tray

Details

Category:: Telecommunications

Object Number:: 1989-929

type:: ph meter

credit:: Muirhead Vactric Components Limited

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