1709/10-1783, Pinchbeck the younger, clock-maker; watchmaker, British Pinchbeck, Christopher 1709 - 1783
1695-1766, active 1720-1750, mathematical, philosophical, optical instrument maker, London, England Cole, Benjamin 1695 - 1766
1711-1788, active 1748-1776, optician, Edinburgh & London, Scottish; British Short, Thomas 1711 - 1788