_________ were used as means of communication in ancient times.
___ were used as carrier birds in ancient times for communication by sending messages to far off places.
In ancient times, people used 'angul' (finger), a mutthi (fist), length of human feet for measurements. Later on, these were not used for measurements.
In ancient India, small length measurements used were an 'angul' (finger) or a mutthi (fist). These methods were stopped because of the need for a standard unit.