The Omicron GMBG Near-Field Optical Microscope (NSOM) with Atomic Force attachment is capable of optical and topographical measurements. It can measure optical fields with a 100 nm resolution, which is well under the diffraction limit of the conventional counterparts. During the acquisition process the NSOM measures the topography of the area of interest as well. The resolution in this mode is few nm in lateral and sub-nanometer in vertical direction.