Good morning,
I was just wondering if anyone has an instruction manual/technical specifications for a British Rototherm, wind up thermohygrograph?
I have been in touch with British Rototherm to see if they can supply with technical specs as we need to repair and calibrate a faulty thermohygrograph. Unfortunately they stopped manufacturing these 25 years ago and have had a recent purge of redundant paperwork they no longer have anything relating to the their mechanical thermohygrograph.
There is no model number/name or product code on our thermohygrograph, I don’t know if British Rototherm produced more than one type of mechanical thermohygrograph but I would be happy to send a photo/ more info if anyone has a manual for one.
Many thanks
Lindsey
Lindsey Gibson
Archive Conservator
Durham County Record Office
Durham County Hall
Durham
DH1 5UL
03000 267 619
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