Ancient Sundials

Dialface ID 30

ObjID30-1

Holder:: Soprintendenza Speciale per i Beni Archeologici di Napoli e Pompei, Pompei, Italy
Site:: Pompei, Italy
Material:: Tufa, Covered with red painted stucco
Dating:: Domus M. Obelli Firmi: 30BC-32AD
Type:: Sphere, Spherical-cut dials--central gnomon point
Site Geolocation:: Lat.: 40.7503, Long.: 14.4871

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Abstract

This sundial's top and sides are broken off. A cornice connects the frontLP with the base, which reflects in a similar shape at the base of the sundial. Gibbs: The house dates from the period between 30 B.C. and 32 A.D.

Measurements

Measurement record: pipeline ObjID 30, matched to this dialface by inventory number.

Quality grade	B (completeness 5 %)
Dial surface	sphere (preferred, not decisive) · fit residual mm: cone 0.69, cylinder 1.16, sphere 0.70
Latitude φ	no latitude determined
Engraved lines	4 hour lines, 0 day lines
Cone half-angle α	not applicable or not determined
Measured	2026-06-12 21:06

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References

– Gibbs, Sharon L., Greek and Roman Sundials, New Haven and London, 1976, p. 146.
– Köln, Deutsches Archäologisches Institut & Archäologisches Institut. zu, Arachne, 2004, no. 2108383.
– Bonnin, Jérôme, La Mesure du temps dans l'Antiquité, Paris, 2015, A_24.