Running with well-crafted combination of sales and marketing, we are engaged as manufacturer, exporter and supplier of Millikan's Oil Drop Experiment in Roorkee, Uttarakhand, India. This experiment aims at measuring the charge of an electron and is perhaps the most basic of all atomic physics or modern physics laboratory experiments. It won Millikan the Nobal Prize in the year 1923. The experiment depends on the ability to control, measure and balance very small force of the order 10-14N. In the experiment the droplets which rise and fall slowly are selected as they are expected to have a fairly small charge. These droplets are made to rise and fall several times. The repetitions of measurement of the velocities of rise and fall reduce the random error of their means. A fairly large number of droplets are observed and their charges are calculated.