Technical watches (1675-1825) Technical watches (1675-1825)			The Chronograph Inking seconds counter with 1/5 seconds, 60 minutes and 12 hours... Full printable version
The Expanding Minute Hand The "Onion" "He Has Chosen the Most Beautiful" The Egg The Coach Watch BERTHOUD's Equation of Time BERTHOUD's Double-Balance RANSONET's Musical Watch The Mixed Numerals The Manual Perpetual Calendar The Benjamin FRANKLIN Dial The Chronograph