Leitz MPV SP Operating Manual in PDF format. There are a total of 25 pages of operating procedures, pictures, accessories, diagrams, and exploded views. The Leitz MPV SP is a high resolution photometric system for measurement of the thickness of transparent, thin, single or double layer films. Because the instrument is based on a microscope, the object to be measured can be as small as a few microns. The system has been designed for use with the Leitz Ergolux®, Metalloplan®, Metalloplan HL®, and Orthoplan® microscopes.