Profile: Tomojit Ghosh Calibration is specializing in calibration of horizontal tanks with dished ends and inclination, floating roof tanks, blending tanks with complicated bottom arrangement and dip system. Data like external circumferences, height, outer or inner diameters of all the courses/shells are taken at multiple pre-defined points. Length and breadth are taken for rectangular tanks. We also determine flush point of bottom of vertical cylindrical tanks by water through flow meter.