Which clock uses shadow to tell the time is it sundial,hourglas or pendulum clock?

Question

Which clock uses shadow to tell the time is it sundial,hourglas or pendulum clock?

Answer 1

Sundial

Answer 2

Sundial measures time of day with shadows.

Hour glass measures out a specific time period - say 3 minutes.

Pendulum clock measures time of day but uses weights and motion to move the internal mechanisms.