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Maker
London Name Plate Manufacturing Co; Limited
Title
The Douglas Combined Protractor and Parallel Rule
Description
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Maker
National Insittute of Agricultural Engineering
Title
In situ methods of measuring soil moisture content - a critical resume
Description
This Report of the British Society for Research in Agricultural Engineering compares methods already developed for determining the average quantity of moisture in the soil, and suggests further research needed to obtain more accurate results.
Information is presented under these headings:- Summary; (1) Introduction; (2) The Importance of Soil Moisture and its Measurement; (3) Definitions; (4) Methods of Measuring the Moisture Contents of Soils; (5) Calibration of Soil Moisture Meters; (6) Conclusions and Recommendations; (7) Suggestions for Future Research; Acknowledgements; Bibliography; Additional Bibliography
Shelfmark
Maker
L. Oertling Ltd.
Title
The Oertling Vertical Magnetometer
Description
Includes an advertisement for a ‘Manual on the Theory and Practical Employment of the Balance’.
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Maker
Cambridge Instrument Company; Limited
Title
Cambridge Three-Phase Meters for very low frequencies
Description
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Maker
Cambridge Instrument Co. Ltd.
Title
Cambridge Corrosion Voltmeter
Description
Shelfmark
Maker
Cambridge Instrument Company
Title
Cambridge Paschen Galvanometer by the Cambridge Instrument Company
Description
Item of sales literature bound within black hardback volume: ‘CAMBRIDGE INSTRUMENT CO. CATALOGUES 696-858’
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