Table of Contents

Part 1 Sun-dials, zodiacs and time: the origins of modern time; sun-dials - history and classification; Greco-Egyptian zodiacs from a Gallo-Romano site; Anglo-Saxon sun-dials and the "tidal" or "octaval" system of time measurement; "The accomplishment of many years" - three notes towards a history of the sand-glass; dialling in the time of Giovan Battista Benedetti; William Oughtred, Richard Delamain and the horizontal instrument in 17th century England; la gnomonique en France a l'epoque de Jean Picard; la gnomomique - livres en langue francaise imprimes entre 1500 et 1800. Part 2 Mechanical horology: an account for repairs to the Westminster Palace Clock; an emblematic watch by Gribelin; the introduction of the dead-beat escapement - a new document; la "dial clock" anglaise et son contexte sociale; l'Angleterre, la France et la navigation - le contexte historique de l'oeuvre chronometrique de Ferdinand Berthoud; documents illustrative of the history of English horology, I - two letters addressed to Thomas Mudge; the context of production, identification and dating of clocks by A. and J. Thwaites; documents illustrative of the history of Englishy horology, II - the cost of William Hardy's regulator clock for Greenwich Observatory, 1811. Part 3 Precision instrumentation: paper, print and mathematics - Philippe Danfrie and the making of mathematical instruments in late 16th century Paris; mathematical instruments and the education of gentlemen; "utile pour les calculs" - the logarithmic scale rule in France and England during the 17th century; the pre-history, origins and development of the reflecting telescope; a timber measuring instrument of the early 19th century.