Lateral Deflection is the deflection of an equivalent pin-headed column in the lateral direction due to any applied load case. The deflection is taken at any distance ’x’ from one end of the column. And is denoted by e. Lateral Deflection is usually measured using the Millimeter for Length. Note that the value of Lateral Deflection is always positive. Typically, the value of Lateral Deflection is greater than 0.