We have years of experience dealing with a large variety of manufacturers and whether you are locked-in or loyal to a particular manufacturer or not we can provide what you are looking for. Also, if you are a supplier looking for a quality distributor, QSA will be a good choice providing quality sales and service capabilities. click on a link below to view the instrumentation offered by that manufacturer: 3D Instruments Acromag Ashcroft Ametek Allen Bradley Andersen Greenwood Adalet Air Monitor Barton Bailey Barksdale Bristol Babcock Brooks Beckman CCS Century Valve Control Air Cashco Cash Acme Differential Pressure Plus, Inc. Drexelbrook Dwyer Endress Hauser Eckardt Foxboro Fisher Fisher Porter Fairchild Flotect Go, Inc. Gould Honeywell Heise Hoke ITT Conoflow Leeds and Northrup Lakewood Instruments Meriam Moore McDaniels Mid-West Masoneilan Mercoid Magnetrol Micromotion Neodyn Norgen OPW Orion Research PSI-Tronix PGI Penberthy Qualitrol Rosemount Robertshaw SOR Samson Tel-Tru Taylor Trerice ThermoElectric Transmation Tracor Westronics Trend UE (United Electric) US Gauge Versa Validyne Viatran Valtek Winters Wika Wallace and Tiernan Watts Westinghouse Whitey Weiss Yokogawa