Front, Dial, Back, Dustcover, Inside dustcover, Inner case front, Inner case hallmark, Outer case 7 knuckle joint, Outer case number, Watch paper, Movement, Edge view of movement

George Graham born c. 1674, , Horsgill, Cumberland, Eng. died Nov. 20, 1751 , London. This Graham cylinder is a good example of the work of this very important maker. Graham invented the dead beat clock escapement and adapted the design to watch works with the dead beat cylinder escapement. The cylinder was as much an advance over the verge as the dead beat was over the recoil escapement in clocks. At the time it was used by Graham, a finely executed cylinder could be brought to very precise timekeeping and many were finished in the latter 18th century with chronometer balances as precision timekeepers. One advantage of the cylinder was that the frictional rest provided an adjustment for isochronism without manipulation of the hairspring. When the watch train delivers excessive force to the escapement, the increased impulse on the balance is counteracted by the increase in friction of the cylinder on the escape wheel. Thus the two effects tend to compensate one another and improve timekeeping.

This watch was taken to the Horological Student's Room at the British Museum where it was examined by Jeremy Evans. It has a very complete set of original serial number markings and appears to be completely original with the exception of the "improved" dial and hands that were added sometime around the middle of the 19th century.