Example of the Willis world clock, with winding key (for showing local time in any part of the world), patented by John Henry Willis in 1929, made by J. H. Willis and Company, Norwich, England, 1929-1935. Willis world clock, 1929-1935 Time Measurement 1929-1935
First prototype of the "Clock of the Long Now", made by the Long Now Foundation, 1999. First prototype of the "Clock of the Long Now", 1999. Time Measurement 1999
Original eight day clock by Harrison, date 1715, wheel work mostly of wood, weight driven Weight driven pendulum clock Time Measurement 1715
Lever escapement pocket watch beating tenths of a second, signed on the back plate 'Wm Williams 32 Rock St Bury. No 19289.' and on the dial 'PATENT No 4762 MARCH 26TH 1890 by WILLM. WILLIAMS BURY', in sterling silver case hallmarked at Chester in 1890, with winding square and hand adjusting square under the back cover. The watch has hour, minute, and small seconds hands, plus a centre seconds hand rotating once every two seconds. A stop mechanism acting directly on the balance wheel and operated by a slide on the side of the case allows use as a stopwatch. Pocket watch and stop watch Time Measurement 1890
Cast of a Saxon Sundial, original at Kirkdale Church, Yorkshire Time Measurement 1935-1958 (reproduction); 1055-1064 CE (original)
Three train, flatbed turret clock by E. Dent with double three-legged gravity escapement, c. 1939. Time Measurement 1939
Representative sample of the equipment used for maintaining the Greenwich Time Service from about 1965 to 1990 comprising six racks of electronic equipment, two end doors, five rear doors, three covers, printer and sign Greenwich Time Service equipment Time Measurement 1965-1970
Sterling silver lever pocket watch, made by Thomas & John Ollivant, Manchester, around 1851. Sterling silver level pocket watch Time Measurement 1850-1860
Pendulum clock designed by Galileo in 1642 and made by his son in 1649, model. Time Measurement 1642-1649 (original); 1883 (model)
