4/4/2025, 8:54:31
Register
Sunshine Recorder – Actinograph RW Munro (1 of 2)
Sunshine Recorder – Actinograph RW Munro
Hover to Zoom
Richard Twort
Flag of United KingdomSomerset, UK
... See more

Sunshine Recorder – Actinograph RW Munro

REF: LA128679
£1,850
€2,161
$2,327
Certified DealerApproved item271 sales by dealer
Certified DealerApproved item271 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

Ask a question

Please note,
This dealer does not accept instant online payment for this item.
To buy this item please email the dealer using the enquiry form below.

Please enter your phone number removing the first ‘0’.
UK international phone number pattern: +44 xxxx xxx xxx
Phone
A selection of items from Richard Twort
Richard Twort has 133 items available.

£ 585

€683
$736
Double Height Barograph + Thermograph

Double Height Barograph + Thermograph

£ 585

€683
$736

Richard Twort

£ 665

€777
$836
Edwardian Barograph by Negretti & Zambra

Edwardian Barograph by Negretti & Zambra

£ 665

€777
$836

Richard Twort

£ 645

€753
$811
Mahogany Barograph with Mirror Back

Mahogany Barograph with Mirror Back

£ 645

€753
$811

Richard Twort

£ 1,450

€1,694
$1,824
Rare Micro Barograph , Harrods, London

Rare Micro Barograph , Harrods, London

£ 1,450

€1694
$1824

Richard Twort

£ 725

€847
$912
Mahogany Barograph 1912

Mahogany Barograph 1912

£ 725

€847
$912

Richard Twort

See more items from Richard Twort