pen
It starts with pen
Pendulum
A part of a clock that starts with "pen" is the pendulum. The pendulum helps regulate the timekeeping of certain types of clocks by controlling the speed at which the clock's gears move.
The swinging component of a grandfather clock is called the pendulum. It regulates the timekeeping of the clock by controlling the speed at which the clock's gears turn. The length of the pendulum determines the clock's accuracy and helps keep time consistent.
needle? The part of a pen that starts with "n" is NIB. The nib is the writing part of the pen.
'Nib' is the writing point of a pen.
A pen / clock
A pen/clock
PEN
A Pen/Clock
A nib used to be part of a pen
pentagon