Railway
Hans Hilfiker, 1944. The seconds hand laps the dial in 58.5 seconds, then waits at twelve for the minute impulse — national punctuality, faithfully reproduced.
Word grid
One hundred and ten letters; the right ones wake up. Rounded to the nearest five minutes, the way people actually speak.
Binary LEDs
Binary-coded decimal: each column is a digit, rows are 8·4·2·1 from top to bottom. Read the lit dots downward.
Daylight arc
The sun travels the arc from a fixed sunrise to sunset; at night it rests below the horizon and the arc waits for morning.
Nixie tubes
Neon-filled glass, cathodes stacked ten deep. The orange glow is the gas discharge; the faint mesh is the anode grid.
Concentric rings
Outer ring sweeps once a minute, middle once an hour, inner once every twelve. Three orbits, one center.
Flip cards
Split-flap mechanics: the upper leaf falls, the lower leaf catches. A hinge line runs through every digit.
Polar dots
Sixty seconds on the rim, sixty minutes inside, twelve hours at the core. Dots fill clockwise and empty at the top of each cycle.
Plain English
Told the way a grandparent would: quarter past, twenty to, nearly noon. Precision is overrated at the dinner table.
Twenty-four hours
One revolution per day, midnight at the bottom, noon at the top. The shaded half is night; the hand shows where in it you stand.
Sand of the day
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Seven-segment
Casio-grey liquid crystal, 1983. Unlit segments stay faintly visible, as they always did in a real LCD.