A handheld survey device includes a Global Positioning System (GPS) receiver for receiving position information, a pointer to point to the location to be measured, a measuring device to measure the distance between the handheld device and the location to be measured and a level and heading device to...http://www.google.fr/patents/US5903235?utm_source=gb-gplus-shareBrevet US5903235 - Handheld surveying device and method
