Australia's telegraph network was linked to Singapore's via Java in 1871, and the net circled the globe in 1902 with the connection of the Australia and New Zealand networks to Canada's via the All Red Line. The two determinations of longitudes, one transmitted from east to west and the other from west to east, agreed within one second of arc ( second of time – less than 30 metres).
Australia's telegraph network was linked to Singapore's via Java in 1871 and the net circled the globe in 1902 with the connection of the Australia and New Zealand networks to Canada's via the All Red Line The two determinations of longitudes one transmitted from east to west and the other from west to east agreed within one second of arc ( second of time – less than 30 metres)