C J Sumner 1959 J. Sci. Instrum. 36 475 doi:10.1088/0950-7671/36/11/310
C J Sumner
Show affiliationsA battery operated recorder is described which is designed for operation for periods of 6 to 12 months without attention. It is suitable for recording such elements as water depth, rainfall, temperature, etc., and is provided with a solar time-check device which obviates the need for an expensive precision clock.
Recording is by a needle-pointed stylus which perforates the chart paper when depressed by a chopper bar. A relatively simple linkage is used to give a rectilinear traverse to the stylus.
93.85.-q Instruments and techniques for geophysical research: Exploration geophysics
92.60.hv Pressure, density, and temperature
92.60.Jq Water in the atmosphere (humidity, clouds, evaporation, precipitation)
Issue 11 ( 1 November 1959)
Received 1 April 1959
C J Sumner 1959 J. Sci. Instrum. 36 475
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