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howing a side view of the dial with its original gnomon.

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        very rare mid 17th century anonymous 3.5 inch horizontal brass sundial  with  original gnomon. The centre of the dial is decorated with a series of concentric circles and circular arcs to form a ‘moon’ or ‘eclipse’ pattern often seen on these early rural dials. Hour lines radiate from the outer of these circles. The Roman numerals in the chapter ring (IIII-XII-VIII) are inward facing and the included angles of the Xs and Vs are quite wide. The dial does not have a noon gap which is common on early clockmakers dials.  In general, the delineation appears to be carefully done with the VI-VI line passing through origin correctly and the other early/late hour lines being co-linear with the appropriate morning/afternoon lines. The outer rings are divided to half-and quarter-hours. This dial , which is English in design, has probably been made by a provincial clockmaker who would have supplied it along with a clock to one of his customers where it would have sat on a windowsill in the house or conservatory. The low angle of 48 degrees means that it would of had variations of around 15 minutes of true local solar time. However, if properly aligned to true south, the dial would  certainly have been capable of indicating solar noon  and therefore  be enough to set  the correct time (at noon) for the balance wheel lantern clocks of the day. It is also worth mentioning that balance wheel lantern clocks could also lose up to 15 minutes a day alone.  Dating from around c1650, it is an exceptionally rare surviver.

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Deotatus Threlkeld (sig)

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howing a rear view of the 3.5 inch square dial.

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A7 A3

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A2 A6 A8

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howing no noon gap and typical of early clockmaker sundials

very rare mid 17th century anonymous 3.5 inch horizontal brass

howing a close up of the concentric circles

Clockmakers Sundial, c1650

Anonymous

Rare

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Clockmakers sundial  with  original gnomon c1650

arly sundial Wanted