River Trent Level Recorder Arrives at Upton Hall

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The British Horological Institute Museum Trust has welcomed a new yet unusual acquisition – a River Trent Level Recorder, donated by the Environmental Agency in Nottingham. The Recorder consists of a clock, dial indicator and chart recorder. It was used to display the water level measured through a float at Trent Bridge, Nottingham.



David Hoskins, FCRM Advisor, Partnership & Strategic Overview, Environment Agency, worked with the Recorder and remembers it well: “It is a pre-war model and stood in the Trent River Board office in Derby Road. The instructions have been lost, but a 25v signal from the float was sent to Derby Road by means of a private GPO (General Post Office) line.”

Ashley Strachan, Chairman of the BHI Museum Trustees, notes: “We are delighted to receive this precious piece of equipment. The Recorder is now in the safe hands of the BHI Museum Trust, where horologists can look after it, and show it to researchers and the general public during our museum open days.”

The Recorder’s mechanism is in good order, and the clock is working. It has a dead-beat escapement and a winding key. The case is in an excellent condition. The case of has a footprint of 765mm wide and 450mm deep. The total height is 1480mm. The upper part of the case contains the clock, the repeater display and the recording drum. The lower part houses the driving weight on a four wire suspension, along with a pendulum.

The Agency has also donated a data logger which replaced the Recorder and has itself become obsolete.


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