William Thomspon, 1st Baron Kelvin, calculated absolute zero in 1848. This is the temperature at which all thermal motion ceases and Lord Kelvin calculated that it was approximately equivalent to -273°C. The absolute scale of temperature is known as the Kelvin scale and the Kelvin (K) has since become a unit of measurement for temperature.
The new Trainmaster Kelvin model from Ball Watch is a fitting watch to bear the physicist's name, since its BALL RR1601 mechanical calibre incorporates a mechanical thermometer module that is capable of measuring outside temperatures between -35°C and +45°C (a Fahrenheit scale is also available), which are displayed on a crescent-shaped scale at 6 o'clock on the dial.
This unique function is housed inside an elegant 39.5mm diameter case in 18-carat rose gold, with a matching leather strap and pin buckle. The dial also features a luminous technology using micro-tubes of tritium gas, which require no external source of light or energy and are 100 times more effective that conventional luminescent coatings.
Available with a grey or silver dial, the Ball Watch Trainmaster Kelvin is a limited-edition of 600 pieces.
