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BS 3292 1960 Edition, December 16, 1960
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Specification for direct reading hygrometers
Additional Comments: W/D NO S/S
Page Count:8
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Two grades of non-recording direct reading hygrometers are specified, both calibrated for use over the range 20 to 100 per cent relative humidity. Permissible error, temperature correction, drift, response time and constructional requirements are specified and methods of test described in appendices.