Tempo Education · Sheet 01
The Complications Sheet
Everything a watch does beyond telling time. One line each.
Calendar
Pointer Date
A hand points to the date on the dial's edge instead of a window.
Complete Calendar
Day, date and month, but it doesn't know short months. Fix it five times a year.
Moonphase
A disc tracking the lunar cycle. Standard ones drift a day every 122 years.
Equation of Time
How far the sun runs ahead of or behind the clock, up to 16 minutes.
Time Zones
Dual Time
A second zone on its own 12-hour display.
Chronograph
Split Seconds
Two seconds hands, so two things can be timed at once. Also "rattrapante".
Chiming
Minute Repeater
Chimes the time on demand. For the dark, before electric light.
Sonnerie
Chimes the time on its own, every hour or every quarter.
Precision
Tourbillon
A rotating cage that averages out gravity. Solved a 1795 pocket-watch problem.
Deadbeat Seconds
A mechanical seconds hand that ticks once a second, like quartz.
Display
Retrograde
A hand sweeps an arc, then snaps back to zero.
Jumping Hour
The hour changes instantly in a window instead of sweeping.
Regulator
Hours, minutes and seconds on separate dials. Built for setting other clocks.
Mystery Dial
Hands that appear to float, with nothing visibly driving them.
Historical
Tachymeter
A bezel scale that turns time over a known distance into speed.
Telemeter
Time between a flash and its sound, read as distance. Artillery and lightning.
Pulsometer
Count 30 beats, read the heart rate. For doctors.
Asthmometer
To count breaths per minute.
Slide Rule
A rotating bezel that multiplies and divides. Navigators, before calculators.
Listing counts are live. Tap one to see every watch on Tempo with that complication.
Next sheet: Cases & glass