Accession No
0351
Brief Description
horizontal dial, purportedly by Butterfield, but in fact 1/4 18th C with later replacements (including gnomon)
Origin
Maker
Class
dials
Earliest Date
1700
Latest Date
1725
Inscription Date
Material
metal (brass, steel); glass
Dimensions
length 136mm; breadth 136mm; thickness 20mm
Special Collection
Robert Whipple collection
Provenance
Purchased by Robert Stewart Whipple from Antique Art Galleries, Grafton Street, London on 03/08/1927.
Inscription
‘Butterfield AParis
Pour 44 Degrez’
Description Notes
Square plate standing on 4 feet. Hour circle divided IIII - XII, I - VIII, numbered by I, subdivided to 15 minutes. Fixed gnomon; brass tipped with applied brass bird, crudely engraved. Corners of the plate decorated with fine floral engraving. Inset compass with cardinal points marked; half-blued needle (a later replacement?). Scratched onto base a divided circle not graduated but with a pointer, divided into 36 divisions to 1˚ and ‘AINE’.
‘The gnomon is a late replacement incorporating the ‘bird index’ as a redundant design feature. The inset compass bowl is also a replacement. The divisions on the reverse of the dial plate and the index are crude and poorly executed - perhaps in the same hand that botched the gnomon replacement.’ (catalogue)
Very faint letters and numbers marked inside the circle on the base; 25-1-2000.
Condition: fair.
[NOTE: On 15/04/2015 XRF analysis was conducted on this instrument. Results and analyses are given in the ‘Notes’ field.]
References
Events
Description
The horizontal dial is the most common form of sundial. The portable version proved very popular with the upper classes during the 19th Century. During this period it could best be described as the wristwatch of its day.
The hour lines are engraved onto a horizontal surface, with a gnomon (pointer) in the centre. Seasonal variations (caused by the earth’s orbit being elliptical, not circular) have to be compensated for, as they can affect the raw reading by up to 18 minutes.
18/10/2002
Created by: Saffron Clackson and Boris Jardine on 18/10/2002
FM:43129
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