You will use the same measurement and calculation processes used by the Frontier Surveying Company , but you will use much cheaper measuring and calculation instruments. The data that must be collected in order to determine the height and diameter of the tank is the horizontal distance between you and the tank, the angle of elevation, and the angle between the sides of the tank. These dimensions are illustrated on the attached sketch. Hand each student a copy of the attached sketches and measurement data. H is the horizontal viewing angle between the two tangent lines.
V is the vertical viewing angle between the top and bottom of the tank.