Document Details *PC* National Maritime Museum [Royal Greenwich Observatory] - The Greewich Timeball was one of the world's first visual signals, used by seamen on the:
Number of documents found: 1
- Title: *PC* National Maritime Museum [Royal Greenwich Observatory] - The Greewich Timeball was one of the world's first visual signals, used by seamen on the
SubTitle: ... Thames to check their marine chronometers. The red ball drops daily at 1 pm Mean Solar Time. L6/SP 12139 - Author: National Maritime Museum
- Publisher:
Keywords: clock
Other Keywords: Timeball
Edition: PC0732 -- Copyright: 2000
Kind: Chapter
Type: Clock (general)
Geographic area: United Kingdom
Topic: Navigation
Organization: Museum
Entered By: fortunat
BHM No: 18942
Parent Document ID: 11422 - Parent Document Title: Horological Postcard Collection of Fortunat Mueller-Maerki - Publisher:
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