The LD-10 water leak detector, from Schonstedt Instrument Company, combines a high-sensitivity ground microphone design with a lightweight amplifier. The amplifier provides a choice from six different filter ranges. These selections allow the user to select the right combination of low-end filtering and high-end filtering to remove the extraneous noises of heavy equipment, traffic, wind, and other noises that may be present at the job site.
Schonstedt Instrument Company, 4030 Moorpark Ave., Suite 124, San Jose, CA, 95117. Tel: 408-249-4673; Fax: 408-249-9653.