GeoSonics Inc offers the SSU 300OLC Seismograph that records and analyzes ground vibrations and noise from manmade sources, including blasting, pile driving, heavy equipment, tunneling, traffic, and more. This product features: a large, 80-character LCD; a standard 50-event memory with an optional 250-event memory; password protection system, an alphanumeric keypad for direct data input; and, easy threc-step operation. It can be downloaded directly to either a printer or a computer, and can be operated by phone line or cellular system. It uses removable and readily available NiCad batteries, offers a 12-day battery life, and is completely rechargeable in one hour. A free comprehensive analysis software package is included. It measures 22 x 16 x 8 cm, and weighs 3 kg. Support and repair facilities are available worldwide.