A method for generating a supplementary index raster file based on a plurality of primary index raster files that are associated with an area of interest uses a computer coupled to a remote sensing device via a network, wherein the computer includes an input device, a display, and a memory. At least one electrode which is at a positive potential with respect to the pressure stage aperture and is adapted to deflect the secondary electrons from the specimen to the detector may be arranged above the bottom pressure stage aperture. An adhesive is attached to the first die, the long lead finger, and the support bar. The first detecting section detects the first section-to-be-detected at one or two positions, and the second detecting section switches between ON and OFF at one position.