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Sunshine Recorder – Actinograph RW Munro (1 of 2)
Sunshine Recorder – Actinograph RW Munro
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Richard Twort
Flag of United KingdomSomerset, UK
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Sunshine Recorder – Actinograph RW Munro

REF: LA128679
£1,850
€2,161
$2,327
Certified DealerApproved item266 sales by dealer
Certified DealerApproved item266 sales by dealer
Description
This Bimetallic Actinograph was designed by the British Meteorological Office & records the shortwave radiation received from the sun & sky on a horizontal surface. The movement operates using sensitive elements of a blackened bimetallic strip mounted at one end on two shaded strips. The free end of the blackened strip records deflections proportional to the incident radiation. This recording is made on a standard daily rotation clock drum. The combination of black & shaded strips provides compensation for ambient temperature changes. The element is exposed to the radiation through a hemispherical glass dome mounted in the top of the white painted metal cover. This particular instrument has never been used & still has the metal ‘top hat’ cover fitted at the factory for protecting the dome in transit. It is therefore in exceptional condition. The cost new in 1960 was £100, equivalent to over £2100 today. A quantity of charts in arbitrary units from 0 to 80 will be supplied with this unique instrument.
declaration
Richard Twort has clarified that the Sunshine Recorder – Actinograph RW Munro (LA128679) is genuinely of the period declared with the date/period of manufacture being c.1960
location
This Sunshine Recorder – Actinograph RW Munro is located in Somerset, United Kingdom

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