====== unités et mesures ======

1 pouce = 2,54 cm \\
1 pied = 30,48 cm \\
1 yard = 91,44 cm \\
1 mile = 1609 m \\
1 gallon US = 3,785 litres \\
1 livre = 0,453 kilogramme \\
0° Fahrenheit = -17,8° Celsius \\