modal3000Model 3000 Survey meter User’s Manual Section 1 Ludlum Measurements, Inc. Page 1-1 December 2015 Introduction The Model 3000 is an ergonomic, lhtweht instrument, whichtechnology, the Littmann Electronic Stethoscope Model 3000 is a powerful, effective tool for health care professionals. Most of all, know that the Model 3000 carries the Littmann brand name,