A clock is a circular/square shaped instrument used to view/measure time in hours, minutes and seconds.
There are mainly four important parts of a clock-dial, hour hand, minute hand and second' hand.
The face or dial of a watch is a circle whose circumference is divided into 60 equal parts, called minute spaces.
A clock has two hands, the smaller one is called the hour hand or short-hand while the larger one is called the minute hand or long band.
\(60\ seconds =1 \ minute \)
\(60 \min =1 \ hour \)
\(30 \ min = Half \ of \ an \ hour \)
\(15 \ min = Quarter \ of \ an\ hour\)