The 5MGB-1000 Portable Digital Logger from Mount Sopris Instruments features a weather-resistant combined-instrument electronics and winch in a 55-pound small-footprint unit. The logger comes with dual-purpose tripod, emergency hand crank, integral precision hardened steel depth-measuring wheel, optical encoder and LED depth and telemetry indicator display. This unit can be spooled with either 660 feet or 1,006 feet of 0.1-inch geophysical logging cable. Mount Sopris Instruments