Question

What are the disadvantages of sand clock or hourglass

Answer 1

Hi! The disadvantages of sand clock or hourglass are:

The sand clock or hourglass had to be on flat surfaces every time so that it can work properly. It has a short duration of a clock probably less than one hour. The main difficulty is one can’t see the time from this gadget accurately.

Answer 2

Answer:

you can not get exact time.

it is short duration clock.

you have to upright it after a particular period of time.

it is a primitive style of watching time.
It always has to be kept in a flat surface

Explanation:

hope this helps