- Museum number
Astronomical compendium; gilt and silvered copper; a) windrose, with volvelle for converting hours a.m and p.m. into Italian or Babylonian hours; b) volvelle with rotating ecliptic ring and separate engraved index; c) and d) universal equinoctial dial for pin gnomon with reversible hour-scale(central parts missing); e) large hole for compass(missing); f) list of towns and latitudes; g) table of planetary rulers; h) horary quadrant for equal hours, scales of umbra recta and umbra versa.
- Production date
- 16thC(late) (?)
Length: 90 millimetres (square)
Width: 90 millimetres (square)
Depth: 19 millimetres
- Curator's comments
- This compendium shows remarkable similarities to Epact 20713 [http://www.mhs.ox.ac.uk/epact/catalogue.php?ENumber=20713; BM reg. no. 1888,1201.295] and can probably be attributed to the same maker or workshop.
Like the other compendium, this instrument is engraved on the back as a quadrant.
The unusual names for Tuesday and Thursday, e.g., Erichdag and Pfinsdag, on the table of planetary rulers for the hours of the day suggest a Southern German origin.
The extensive decoration includes figures holding astronomical instruments, and inside the shadow square on the back, a man with a spade and a severed head.
[I. Meliconi, EPACT 1998, http://www.mhs.ox.ac.uk/epact/catalogue.php?ENumber=82594]
- Not on display
Latest: 3 (Mar 2017)
5 (Feb 1996) Verdigris.
- Acquisition date
- Britain, Europe and Prehistory
- Registration number