Timepiece with the fewest moving parts:
Sundial.
Timepiece with the most moving parts:
Hourglass.
#sundial has some noteworthy moving parts#like the sun#and the earth
not geocentric or heliocentric but a secret third thing
Hourglass.
#sundial has some noteworthy moving parts#like the sun#and the earth
not geocentric or heliocentric but a secret third thing