This boatclock, compassed by a small and solid porthole case made of cast brass, may either be hung up on the cabin wall or be used to weight down the files on the desk. It has the following measures:
Outer diameter of the porthole case: 14 cm
Diameter of the clock face: 7,5 cm / 2.95 inches
Total weight: 1,6 kg / 3.53 pounds
The glass is made of lead crystal and finished off with a very neat facet grinding. In order to adjust the clock or change the batterie (1,5 V) inside the quartzwerk, it may be opened along the two screws that hold the porthole case together (second picture).