Ball Trainmaster Kelvin 39.5mm

Inspired by physicist and engineer Lord Kelvin, the man known for developing the Absolute Thermodynamic Temperature Scale or now recognised as the Kelvin scale, Ball Watches have designed the Ball Trainmaster Kelvin watch. With the Trainmaster Kelvin, Ball brings the temperature readout back into mechanical territory, incorporating it into a heritage design complete with Swiss movement. Like Lord Kelvin in the scientific field, Webb C. Ball can also lay claim to a similar pioneering role in the history of watchmaking, as he introduced the first chronometry standards used by the American railroad companies, now known in the watch industry as the COSC standard.

The Ball Trainmaster Kelvin watch is the automatic calibre BALL RR1601-C movement which includes the TMT mechanical thermometer module. This means the wearer can measure the outside temperature by Fahrenheit on their wrist from the half moon shaped window at 6 o’clock. The watch has scratch resistant sapphire crystal glass with antireflective treatment. The dial set with 14 luminescent micro gas tubes that allows perfect readability in the dark without requiring any recharge for up to 25 years. The timepiece also has a shock resistance to 5,000Gs, water resistance of 30 metres and an open case back where you can watch the automatic movement hard at work. The Ball Watch Company Trainmaster Kelvin is limited in its production to 600 pieces worldwide.

One of the standout features of Ball watches is their use of tritium gas tubes, which provide a constant and reliable source of illumination in low light conditions. This technology was first used by Ball watches in the late 1800s and continues to be a defining feature of the brand today.