| Air Flowmeters |
| Dryerbox, In-O-Vate Technologies | http://www.dryerbox.com |
| Air Flowmeters |
| National Energy Control Corp. | http://www.neccdelivers.com |
| Air Flowmeters |
| Northeast Medical Consulting Inc. | http://www.nemedical.net |
| Air Flowmeters |
| Pneuline Controls Co. | http://www.neccdelivers.com |
| Air Flowmeters |
| Shortridge Instruments, Inc. | http://www.shortridge.com |
| Air Velocity |
| ALNOR Products/TSI | http://www.tsi.com/ |
| Air Velocity |
| Ebtron, Inc. | http://www.ebtron.com |
| Air Velocity |
| Extech Instruments | http://www.extech.com |
| Air Velocity |
| Fluke Corp. | http://www.fluke.com |
| Air Velocity |
| Pacer Industries, Inc. | http://www.pacer-instruments-usa.com |
| Air Velocity |
| Shortridge Instruments, Inc. | http://www.shortridge.com |
| Air Velocity |
| Testo, Inc. | http://www.testo.com |
| Air Velocity |
| TSI Inc. | http://www.tsi.com |
| Air Velocity |
| Ultratech Industries | http://www.hamlincos.com |
| Biomass |
| AMETEK Power Instruments | http://www.ametekpower.com |
| Biomass |
| Dett International Inc. | http://www.dettgroup.com |
| Biomass |
| Endress+Hauser | http://www.endress.com |
| Biomass |
| Metrix Instrument Co | http://www.metrix1.com |
| Biomass |
| Siemens Energy & Automation Inc | http://www.siemens.com |
| Btu |
| National Energy Control Corp. | http://www.neccdelivers.com |
| Btu or Therms |
| EMCO Flow Systems | http://www.emcoflow.com |
| Btu or Therms |
| Onicon Inc. | http://www.onicon.com |
| Btu or Therms |
| Preso Flow Metering Equipment | http://www.preso.com |
| Btu or Therms |
| Systecon Inc. | http://www.systecon.com |
| Condensate |
| EMCO Flow Systems | http://www.emcoflow.com |
| Electrostatic |
| Ion Systems Industrial | http://www.ion.com |
| Electrostatic |
| Monroe Electronics | http://www.monroe-electronics.com |
| Fireline |
| Master Meter | http://www.mastermeter.com |
| Fireline |
| Mueller Co. | http://www.muellercompany.com/ |
| Flow | Gas or Air | Automation Products, Inc. | http://www.dynatrolusa.com |
| Flow | Gas or Air | Barnant Co. | http://www.barnant.com |
| Flow | Gas or Air | Ebtron, Inc. | http://www.ebtron.com |
| Flow | Gas or Air | EMCO Flow Systems | http://www.emcoflow.com |
| Flow | Gas or Air | ERDCO Engineering Corp. | http://www.erdco.com |
| Flow | Gas or Air | Hoffer Flow Controls, Inc. | http://www.hofferflow.com |
| Flow | Gas or Air | MKS Instruments, Inc. | http://www.mksinst.com |
| Flow | Gas or Air | Newport Electronics Inc. | http://www.newportUS.com |
| Flow | Gas or Air | Omega Engineering, Inc. | http://www.omega.com |
| Flow | Gas or Air | Onicon Inc. | http://www.onicon.com |
| Flow | Gas or Air | Preso Flow Metering Equipment | http://www.preso.com |
| Flow | Gas or Air | Shortridge Instruments, Inc. | http://www.shortridge.com |
| Flow | Gas or Air | Veris, Inc. | http://www.veris-inc.com |
| Flow | Water | Carlon Meter Co., Inc. | http://www.carlonmeter.com |
| Flow | Water | EMCO Flow Systems | http://www.emcoflow.com |
| Flow | Water | ERDCO Engineering Corp. | http://www.erdco.com |
| Flow | Water | Hays Fluid Controls | http://www.haysfluidcontrols.com |
| Flow | Water | Innovative Waters, LLC | http://www.inovativewaters.com |
| Flow | Water | Omega Engineering, Inc. | http://www.omega.com |
| Flow | Water | Onicon Inc. | http://www.onicon.com |
| Flow | Water | Preso Flow Metering Equipment | http://www.preso.com |
| Flow | Water | Veris, Inc. | http://www.veris-inc.com |
| Flow |
| Dickson Co. | http://www.dicksonweb.com |
| Flow |
| Dynamic Test Systems, Inc. | http://www.dtsdyno.com |
| Flow |
| Guardian Fire Equipment, Inc. | http://www.guardianfire.com/ |
| Flow |
| Heath Consultants Inc. | http://www.heathus.com |
| Flow |
| Master Meter | http://www.mastermeter.com |
| Flow |
| Matheson Gas Products, Inc. | http://www.matheson.com |
| Flow |
| North American Mfg. Co., Ltd. | http://www.namfg.com |
| Flow |
| Orion Safety Industries Pty Ltd. | http://www.orionsafety.com.au |
| Flow |
| Reddy-Buffaloes Pump Co. | http://www.rbpump.com |
| Fluid Flowmeter |
| Carlon Meter Co., Inc. | http://www.carlonmeter.com |
| Fluid Flowmeter |
| National Energy Control Corp. | http://www.neccdelivers.com |
| Gas Flowmeters |
| National Energy Control Corp. | http://www.neccdelivers.com |
| Heat | District Heating | Dett International Inc. | http://www.dettgroup.com |
| PH |
| PEP Plastic Engineered Products | http://www.pep-plastic.com |
| PH |
| Town & Country Plastics, inc. | http://www.tandcplastics.net
|
| PH |
| Western Water Products | http://www.westwaterpro.com |
| Remote Reading | 3G Technology | Master Meter | http://www.mastermeter.com |
| Sockets | Meter | Easter-Owens | http://www.easter-owens.com |
| Sockets | Meter | Eaton Electrical Inc. | http://www.eatonelectrical.com |
| Sockets | Meter | Milbank Mfg. Co. | http://milbankmfg.com |
| Sockets | Meter | National Meter Industries Inc. | http://www.national-meter.com |
| Sockets | Meter | Siemens Energy & Automation Inc | http://www.siemens.com |
| Steam Flowmeters |
| National Energy Control Corp. | http://www.neccdelivers.com |
| Volume | Air and Gas | ALNOR Products / TSI | http://www.tsi.com// |
| Volume | Air and Gas | Ebtron, Inc. | http://www.ebtron.com |
| Volume | Air and Gas | ERDCO Engineering Corp. | http://www.erdco.com |
| Volume | Air and Gas | Omega Engineering, Inc. | http://www.omega.com |
| Volume | Air and Gas | The Energy Conservatory | http://www.energyconservatory.com |
| Volume | Air and Gas | Ultratech Industries | http://www.hamlincos.com |
| Volume | Water | Carlon Meter Co., Inc. | http://www.carlonmeter.com |
| Volume | Water | ERDCO Engineering Corp. | http://www.erdco.com |
| Volume | Water | Hays Fluid Controls | http://www.haysfluidcontrols.com |
| Volume | Water | Innovative Waters, LLC | http://www.inovativewaters.com |
| Volume | Water | Onicon Inc. | http://www.onicon.com |
| Water |
| Azel Technologies Inc. | http://www.azeltec.com/ |
| Water |
| Carlon Meter Co., Inc. | http://www.carlonmeter.com |
| Water |
| Lee Brass | http://www.leebrass.com |
| Water |
| Oventrop Corp. | http://www.oventrop-na.com |
| Water |
| Neptune | http://www.neptunetg.com |
|
| Dett International Inc. | http://www.dettgroup.com |
|
| TUV America | http://www.tuvamerica.com |