Measurements of Area:
There are various methods to estimate the area of object like square-ruled grid technique, polar planitometer technique, cut and weigh method etc. They are discussed as under.
(a) Square-rued grid technique :
This method is quite similar in operation to the ocular graticule device for linear measurements. Ocular micrometer ruled with a rid of small equal-sided squares is used for the measurement. The area occupied by a grid-square is measured
by calibration with a stage micrometer. Keep the specimen on stage and focus. Count the number of squares occupied by the specimen and the area of specimen
