Positioning and surveying instruments, namely, global positioning systems consisting of receivers, transceivers, antennas, casings, rechargeable batteries, and platforms; computer software for computing an x, y and z coordinate on the earth and assigning an attribute or description to that coordinate for mapping purposes and for computing a users current location and navigating to a desired or previously fixed location, in the fields of surveying, construction, commercial mapping, civil engineering, precision agriculture, photogrammetry mapping, and hydrography measuring apparatus for use in preparing surveys of costal land formations and depth of harbors and seaways, apparatus and instruments for the surveying and locating terrestrial features and structures; laser surveying instruments, namely, lasers for use in measuring the range to, height, and weight of, and other dimensions relating to objects and terrain and creating two or three dimensional representations of the objects or terrain; rotating laser surveying instruments for surveying the position of land formations and terrestrial features and structures on a horizontal and vertical plane by illuminating lasers and swiveling lasers horizontally and vertically; laser and GPS systems, namely, receivers, electronic total stations, rotating lasers, pipe lasers for use in the field of agriculture, construction, machine control, surveying, mapping and positioning