Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928
See also:
Transit Clock by Earnshaw
Earnshaw's Second Clock
Letter from Earnshaw to Hamilton
Earnshaw's Chronometer Escapement (at antique-watch.com)
Armagh's Longcase Regulators (PDF format only)
History of Armagh Observatory
Wikipedia Entry
Last Revised: 2011 August 11th
