Identification

ID in this catalogue	WCO 20
Type	Outflow water clock
Current Location	Last known to be in the Capitoline Museums, Rome - unverified
Catalogue Numbers	Unknown
Provenance	A private house near the site of a temple of Isis and Sarapis (monastery of Santa Lucia in Selci).
Date	Probably Roman era, based on the style of interior markings
Dimensions	Maximum dimension around 11 cm
Material	Basalt
Condition	Unknown
Publications	Borchardt (1920)

 

Content

External registers	None
External upper band of text	No external decoration
External lower band(s) of text	No external decoration
Exterior Astronomical Diagram	No
Rim	Month and zodiac markings: Phamenoth, Pharmouthi, Pisces and the spring equinox, plus some finer gradation of the year via holes (six per month).
Interior markings	Yes, apparently dots joined by horizontal lines.
Other features

 

Notes

See also the entry in: Schomberg, A., Berlin Waterclock Project, ID 39 Rome, 2019, Edition Topoi, DOI: 10.17171/2-10-33

Images

See Borchardt (1920) for a drawing of the interior and rim.