The parallel surface bearing is interesting in that on first sight it completely contradicts the classical Reynolds lubrication theory. Secondly its mode of operation has only recently been capable of detailed explanation. The optical technique, described in the last section offered a precise method of proving that thermal distortion of the pads provides the necessary converging wedge. When the experimental results were analysed by the theory developed in part I, it was seen that thermal distortion does in fact, explain them very accurately. The simplifying assumptions needed to solve the Reynolds and energy equations are somewhat stretched, but, within this limitation, the agreement between the proposed mechanism and the theory is good.