ObjI129-10
‹ Ancient Sundials
Dialface ID 127
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Abstract
The gnomon hole in the top surface is square. A wide lip follows the curve of the lower edge. The lion paws which flank the base continue onto the side reliefs which also include a rosette base and a calyx with petals and tendril.
Measurements
Measurement record: pipeline ObjID 129, matched to this dialface by inventory number.
This object is registered in the measurement database, but its own record holds no measured values; see the variants below.
Variant Frag1
| Quality grade | A (completeness 92 %) |
|---|---|
| Dial surface | cone (decisive) · fit residual mm: cone 0.23, cylinder 2.81, sphere 3.17 |
| Latitude φ | 37.88 ± 0.18° (consensus of witnesses) |
| Klima | Athens |
| Engraved lines | 9 hour lines, 3 day lines |
| Cone half-angle α | 52.0 ± 0.60° (cone residual on all points 0.27 mm) |
| Measured | 2026-06-12 20:17 |
What the dial shows at this latitude
| Winter solstice | Equinox | Summer solstice | |
|---|---|---|---|
| Noon altitude of the Sun | 28.4° | 52.1° | 75.8° |
| Noon shadow (gnomon heights) | 1.85 | 0.78 | 0.25 |
| Length of the day | 9.3 h | 12.0 h | 14.7 h |
| Length of a seasonal hour | 47 min | 60 min | 73 min |
Computed for the measured latitude with the obliquity of the JPL ephemeris at 101 BC (year -100). The latitude is the one the dial was made for, not a find-spot coordinate.
References
- – Deonna, Waldemar, Le mobilier délien, Paris, 1938, p. 190 f, figures 216 and 217 (drawings), plate 536 (photograph).
- – Gibbs, Sharon L., Greek and Roman Sundials, New Haven and London, 1976, p. 247, p. 255, plate 34.
3D Models
