Schonstedt Instrument Co. sells sophisticated electronic devices to locate underground sewer pipes, water lines and other utilities. But the company also gives away its products for another use.Around the world, unexploded land mines linger long after wars end, lying in wait to take life and limb of innocent victims — often children. By donating its locating equipment to help get rid of those mines, the company aids the healing of countries ravaged by war.Schonstedt also engages outsiders. The company solicits donations from customers and other groups in a two-for-one deal: If someone pays for one device for the mine-detection program,
