| Originally a mechanical engineer, he developed his interest in sundials nine years ago and has made more than 2 000 dials. |
| Multiple sundials were situated in strategic locations along the terraces, capturing the sun's light as it made its daily path across the sky. |
| He was also interested in hydrodynamics and hydraulics and he moved on from making sundials to invent other machinery, in particular pumps. |
| The developments were not, however, in new types of clock, merely in improved designs of sundials and water clocks. |
| Further back, the Chinese and the Romans used clepsydras at about the same time, although Egyptian sundials go further back. |
| In addition to gravestones, Hummelstown stone was fashioned into pedestals for urns, sundials, clocks, and door stops. |
