One second pendulum
Longcase in Vacuum
4 months running
- Year-going precision wall clock
- Centre seconds hand
Hour hand driven by magnetic gear
10 weeks running Precision clock.
Hour indication in the driving wheel.
- Precision table clock.
- 4 months running time.
Twin pendulum rods out of fused silica
(Table design: David Lewis Sugarcreek OH)
An elegant coffee table with:
Circular glass plate
a precision clock movement
2 weeks running
A ballpoint pen made by a clockmaker !