Welcome to the web presence of Lennartz electronic GmbH! Serving the seismological community since 1966 (the legendary MARS-66 refraction seismics datalogger was conceived and manufactured at Lennartz), and constantly refining the art of short- and intermediate-period seismometry since 1986, and exclusively so since 2004.

Please note that we are in the process of moving our web presence to a different hosting service. Please excuse the mess and bear with us until everything is back in working order! Thank you for your understanding.