- Museum number
Nocturnal and horary quadrant; brass; irregular outline; scrolled and engraved projections at top; sights broken off; obverse: nocturnal for Italian hours; reverse: horary quadrant for latitude 43 degrees; small circular arc in corner; date-scales on both sides of hour-scales; scales of umbra versa and umbra recta near outer edge of quadrant; inscribed.
- Production date
Width: 150 millimetres (max)
- Curator's comments
- Ward 1981
Obverse A nocturnal for Italian hours, marked: HOROLOGIVM NOCTIS AD STELLAM POLI ET DVAS VLTIM STE. VRE MA. The handle is at 3 May.
Reverse A horary quadrant for latitude 43°. with, in the corner, a small circular arc entitled MOT. SOLS, relating the sun's position to the date, both names of signs and of months identified by initials only. The quadrant indicated Italian hours, and from it the equinoxes are at 10 March and 17 September. The date-scales are on both sides of the hour-scales. Near the outer edge of the quadrant, outside the scale of degrees, a scale of VMBRA VERSA reading 0-36 for 0°-45°, followed by a scale of VMBRA RECTA reading from 36-0 for 45°-90°.
This face inscribed: QVADRANS MEN/SORIVM ET HOR/ARIVM DIEI AD. ALTIT POLI G. 43 The string hole marked R. 14.
- Not on display
Latest: 2 (Nov 2016)
1 (Nov 1996)
5 (Mar 1996) Verdigris on site of sighting vane. Sighting vane(s) broken off.
- Acquisition date
- Acquisition notes
- The Ilbert Collection of clocks, prints and other related material was destined to be sold at Christie's auction house on 6th-7th November 1958. As a result of the generous donation of funds by Gilbert Edgar CBE the sale was cancelled and the material purchased privately from the beneficiaries of the Ilbert Estate.
Ilbert's watches were then acquired with further funds from Gilbert Edgar CBE, public donations and government funds. These were then registered in the series 1958,1201.
- Britain, Europe and Prehistory
- Registration number
- Additional IDs
Previous owner/ex-collection number: CAI.2438 (Ilbert Collection)
Previous owner/ex-collection number: Q347 (Ilbert Ledger)