This regulator was built as a direct result of an award of ¨6,500 given to Tim Brameld by the Scottish Development Agency in 1989.
The movement has two 16 pound weights driving seperate mean and sidereal trains that share a common 'scape wheel. The 'scape wheel itself is half the usual diameter thereby reducing its inertia and lessening the angle through which the pendulum is impulsed. The majority of the pivot holes have ball races in much the same way as anti-friction rollers were occasionally used by earlier clockmakers.
Unusually the sidereal train has two wheels with teeth of high prime numbers which were impossible to cut on conventional wheel-cutting equipment. Therefore a computer program was designed to to help make a wheel with the correct number of teeth. Another program was used to calculate the wheel ratios which were complicated by the use of two trains sharing a common 'scape wheel. The computer yielded a cumulative error between the two trains of .803 seconds in 20 years, a factor that has no direct influence on the regulator's actual timekeeping capabilities.
Sadly the art of making complicated and high quality clocks and pocket watches has all but disappeared and the few that carry on the tradition deserve considerably more patronage.