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Inventory no. 52101 - Former Display Label

?English VERTICAL DISC DIAL.
?1593.

Signed, "" ( Nathaniell Torporley inventor ( ( Charolus Whitwell Sculpsit ( "", the date '1593' appears on the table of epacts, etc. Gilt brass. 109 x 69 mm.
On the side shown are two vertical disc dials with folding gnomons and "A table showing the moueable feastes for ever". On the other side is a quadrant divided into 0° - 90°, and an alidade with folding sight-vanes. In the centre is a disc engraved with a table of epacts, primes and dominical letters, surrounded by a zodiac/calendar scale. This disc rotates within a circular zodiac scale arranged as two concentric circles, each divided according to six of the signs. At the lower edge of this side is a further scale numbered each way up to 12 over the arc of 60°.
The constructional details of this instrument, including the linear acanthus leaf pattern on the alidades, the folding gnomons and the perfect 30 Whitworth/90 metric thread on the central bolt which screws into an original tapping, make it difficult to accept as sixteenth century workmanship. The use of sculpsit, rather than fecit, in the signature suggests that this instrument may be of nineteenth century origin, based on an unrecorded engraving by Whitwell, possibly an illustration in a printed book. The engraved lettering is a fairly good copy of Whitwell's script as known from other instruments signed by Whitwell. The intrusive 'h' in Whitwell's Christian name is suspicious, as he normally signs, 'Carolus'. The presence of Torporley's name is perhaps further indication of inspiration from a printed source.
From the Spitzer Collection.

[65]
Lewis Evans Collection.

Case: UG 6.

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