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John Davis & Son Derby Ltd.
Industry
Lamp
John Davis & Son Derby Ltd.
66.148/1
More information
Industry
Miner's dial
John Davis & Son Derby Ltd.
81.38I/2
More information
Industry
Bluebell A.C. bell
John Davis & Son Derby Ltd.
66.148/4
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Industry
Armoured signalling transformer
John Davis & Son Derby Ltd.
66.148/5
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Industry
Biram anemometer
John Davis & Son Derby Ltd.
70.37I
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Industry
Ohmmeter
John Davis & Son Derby Ltd.
66.148/3
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Industry
Hygrometer
John Davis & Son Derby Ltd.
81.38I/1.1
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Industry
Hydrometer
John Davis & Son Derby Ltd.
88.176I/1
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Industry
Hygrometer
John Davis & Son Derby Ltd.
66.204/34
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Industry
Signalling key
John Davis & Son Derby Ltd.
66.148/7
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Industry
Velometer
John Davis & Son Derby Ltd.
2009.128/226
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Industry
Biram anemometer
John Davis & Son Derby Ltd.
92.67I/14
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