Trimble, MGIS Backpack
With an internal rigid frame and two 5/8" screwthreads, this backpack is purpose built for carrying GPS equipment. It has padded strapping and a secure waiste-belt, for added comfort. Inside it has places to hold up to four camcorder batteries, and a receiver box, as well as ample extra room for your additional equipment and lunch. The screwthread attachments support all of Trimble's Mapping & GIS GPS receivers and antennas. For elevating the antenna, a 1 foot (P/N 31165) pole segment is recommended.