LTRMP standard operating procedures: Manual zoom transfer scope Owens, T., and L. Robinson. 1996. Long Term Resource Monitoring Program standard operating procedures: Manual zoom transfer scope. U.S. Geological Survey, Environmental Management Technical Center, Onalaska, Wisconsin, December 1996. LTRMP 95-P008-5. 3 pp. + Appendix.. (NTIS #PB97-141782) ABSTRACT The manual zoom transfer scope is a device that allows for simultaneous viewing and scale matching of a variety of sources (such as aerial photos, plats, and surveys) to a georeferenced base map, such as a U.S. Geological Survey topographic map. After the zoom lens is used to adjust for scale differences, data can be transferred (traced) to a stable base overlay (such as mylar or acetate) and digitized by using a geographic information system. KEYWORDS Edge tying, lens selection, photo/map alignment, project definition, quality control, scale matching, source materials