active 1868-1968, optical instrument maker; clock maker, Manchester, England Thomas Armstrong and Brother 1868 - 1968
1530?-1614, active 1554-1590, clockmaker; scientific instrument maker, Italian Volpaia, Girolamo della Unknown - 1614
1813-1893 clockmaker; inventor of a chronoscope, German, active Switzerland Hipp, Matthias 1813 - 1893