| Journal Call no. | AP8.W56 |
|---|---|
| Article Title | The time-ball : circa: 1900-1910. |
| Is Part Of | Window ; v.5, no.20, 31 May 1996, p.47, illus. |
| Abstract | This article mentions two methods used for measurement of time in Hong Kong before the invention of radio. The sites for operations are featured. |