| 摘要 |
<p>A clock for indicating time for effectively all the countries and time zones of the world, the hour hand of the clock being in the form of a disc that rotates once every twenty-four hours against a twentyfour hour scale. The disc having projected thereon a map of the world centered on the South Pole with the majority of the time zones positioned in accurate longitude around the periphery of the disc. The clock also included indicators for each time zone to provide simple visual indication of the time in any zone or country of the world.</p> |
