Identification
| Title | Water clock (OI) |
| Water Clock ID | WCO 21 (see catalogue of water clocks) |
| Type | Astronomical Representation |
| Decan List Family | AR1 |
| EAT3 Number and Name | - |
| EAT3 Pages and Plates | - |
| EAT3 Decan List Family | - |
| Publications | Ritner (2016) |
| Location | Oriental Institute Museum, A7125 |
| Date | Ptolemaic, time of Ptolemy II |
Content
| Registers | Probably 2 or 3 |
| Circumpolar Group and Deities | ? |
| Planets | Yes (Jupiter and the prow of Saturn's barque) |
| Decan Names | ? |
| Decanal Stars | ? |
| Personifications of the Decans | ? |
| Cluster Numbers | ? |
| Depictions of Decanal Constellations | ? |
| Decanal Deity Names | ? |
| Decanal Deity Figures | Unlikely |
| Lunar Months | ? |
| Civil Months | ? |
| Nut | Unlikely |
Notes
This fragment of a Ptolemaic water clock is consistent with an astronomical representation similar to that of the Amenhotep III water clock, even preserving Amenhotep's Horus name in a serekh, although the cartouches have Ptolemy II's name. See Ritner (2016) for extensive details, including images of the rim which contains a non-Egyptian inscription. The provenance is also described: Frankfort purchased the fragment in Mosul in 1930 and was told it was discovered in Nineveh.
Schematic
The fragment preserves only a small part of the rim, in the area of the superior planets. The layout was presumably identical to the Amenhotep III water clock.
Decan List
No part is preserved.
Images
See Ritner (2016).