Add to ORKGThe U.S. Naval Observatory (USNO) has provided timing for the Navy and the Department of Defense sin...
T.S. & J.D. NegusThe Gettysburg Chronometer Break-circuit chronometer19th CenturyRosewood, BrassCase...
T.S. & J.D. NegusThe Gettysburg Chronometer Break-circuit chronometer19th CenturyRosewood, BrassCase...
The establishment of regular time-signals and their distribution throughout Britain by means of galv...
The reference system is described which involves timing, scale, coordinate systems and their transfo...
The precise determination of time requires for its execution, a series of scientific instruments wh...
From 1859 to 1864, both visual and audio one o’clock time signals operated in Glasgow. Although the ...
During 1972 time transfer experiments were run between the U.S. Naval Observatory and the Royal Gree...
Some aspects of precision time measurements, controlled by means of piezo-electric-vibrators, as dep...
This is a comprehensive, illustrated catalogue of the 200+ marine chronometers in the collections of...
Vols. for 1841-1914 include Rates of box and pocket chronometers on trial for purchase by the Board ...
Britain's nineteenth-century railway companies traditionally play a central role in histories of the...
Built in Greenwich in 1675–1676, the Royal Observatory was situated outside the capital but was deep...
The U.S. Naval Observatory (USNO) has provided timing for the Navy and the Department of Defense sin...
Britain's nineteenth-century railway companies traditionally play a central role in histories of the...
The U.S. Naval Observatory (USNO) has provided timing for the Navy and the Department of Defense sin...
T.S. & J.D. NegusThe Gettysburg Chronometer Break-circuit chronometer19th CenturyRosewood, BrassCase...
T.S. & J.D. NegusThe Gettysburg Chronometer Break-circuit chronometer19th CenturyRosewood, BrassCase...
The establishment of regular time-signals and their distribution throughout Britain by means of galv...
The reference system is described which involves timing, scale, coordinate systems and their transfo...
The precise determination of time requires for its execution, a series of scientific instruments wh...
From 1859 to 1864, both visual and audio one o’clock time signals operated in Glasgow. Although the ...
During 1972 time transfer experiments were run between the U.S. Naval Observatory and the Royal Gree...
Some aspects of precision time measurements, controlled by means of piezo-electric-vibrators, as dep...
This is a comprehensive, illustrated catalogue of the 200+ marine chronometers in the collections of...
Vols. for 1841-1914 include Rates of box and pocket chronometers on trial for purchase by the Board ...
Britain's nineteenth-century railway companies traditionally play a central role in histories of the...
Built in Greenwich in 1675–1676, the Royal Observatory was situated outside the capital but was deep...
The U.S. Naval Observatory (USNO) has provided timing for the Navy and the Department of Defense sin...
Britain's nineteenth-century railway companies traditionally play a central role in histories of the...
The U.S. Naval Observatory (USNO) has provided timing for the Navy and the Department of Defense sin...
T.S. & J.D. NegusThe Gettysburg Chronometer Break-circuit chronometer19th CenturyRosewood, BrassCase...
T.S. & J.D. NegusThe Gettysburg Chronometer Break-circuit chronometer19th CenturyRosewood, BrassCase...