- Museum number
A copper alloy quadrant of the 'quadrans novus' type, laid out for use in England.
- Production date
- 1388 (possibly, according to Elly Dekker (see her 2008 article in Annals of Science))
Length: 67.30 - 67.60 millimetres (radius of sides)
Length: 11 millimetres (height of sighting vanes)
Thickness: 1.50 millimetres
- Curator's comments
- For a full description see Elly Dekker, ‘”With his sharp lok perseth the sonne”: A new quadrant from Canterbury’, Annals of Science 65, 2008, 201-220.
- On display (G40/dc7/no3)
- Acquisition date
- Acquisition notes
- Funding sources: Art Fund (£50,000), NHMF (£125,000), British Museum Friends (£110,000) and Challenge Fund (£65,000).
The quadrant was auctioned at Bonham's London on 21 March 2007, lot 124. The BM was outbid by an anonymous telephone bidder, who acquired the instrument for £138,000 (incl. buyer's premium). Later in the year the new owner applied for an export licence for the object, now with a price tag of £350,000. On 4 December Margaret Hodge, the Culture Minister, following a recommendation by the Reviewing Committee on the Export of Works of Art and Objects of Cultural Interest, placed a temporary export ban on the instrument which provided a chance to raise the funds to match the suggested selling price and thus to keep the object in the UK. In late May 2008, a few days before the export ban expired on 3 June, the astrolabe quadrant was finally acquired.
- Britain, Europe and Prehistory
- Registration number