• Esterline Technologies Corp.
• Fairchild Corp.
• Fargo Electronics, Inc.
• Farrel Corp.
• Fedders Corp.
• First Aviation Services Inc.
• Fleetwood Enterprises, Inc.
• Flight Safety Technologies Inc.
• FLIR Systems, Inc.
• Flowserve Corp.
• Fuel Tech NV
• Gardner Denver, Inc.
• General Dynamics Corp.
• Genus, Inc.
• Glacier Water Services, Inc.
• Global Power Equipment Group Inc.
• Goodrich Corp.
• Graco Inc.
• Graham Corp.
• Groen Brothers Aviation Inc.
• GSI Lumonics Inc.
• Hardinge Inc.
• Harsco Corp.
• Hawk Corp.
• HEICO Corp.
• Herley Industries Inc.
• Hi-Shear Technology Corp.
• Hirsch International Corp.
• Hitachi, Ltd.
• Holter Technologies Holding AG
• Honeywell International Inc.
• Hughes Supply, Inc.
• IDEX Corp.
• Illinois Tool Works Inc.
• Irvine Sensors Corp.
• JLG Industries Inc.
• Kadant Inc.
• Kaman Corp.
• Key Technology, Inc.
• Kingsley Coach, Inc.
• Kreisler Manufacturing Corp.
• L.S. Starrett Co.
• Lennox International Inc.
• Lincoln Electric Holdings Inc.
• LMI Aerospace, Inc.
• Lockheed Martin Corp.
• Lowrance Electronics Inc.
• Mestek, Inc.
• Metso Corp.
• Mettler-Toledo International Inc.
• Micron Enviro Systems, Inc.
• Milacron Inc.
• Minuteman International Inc.
• Monaco Coach Corp.
• Mooney Aerospace Group Ltd.
• MPM Technologies, Inc.
• MSC Industrial Direct Co. Inc.
• Murray United Development Corp.
• NACCO Industries, Inc.
• National RV Holdings, Inc.

• New Century Companies Inc.
• Nordson Corp.
• Northrop Grumman Corp.
• Northrop Grumman Systems Corp.
• NUR Macroprinters Ltd.
• Oilgear Co.
• Orbital Sciences Corp.
• Paragon Technologies Inc.
• Peerless Manufacturing Co.
• Pemco Aviation Group Inc.
• Pentacon, Inc.
• Prab, Inc.
• Precision Castparts Corp.
• Presstek, Inc.
• Profile Technologies, Inc.
• Quality Products, Inc.
• Quipp, Inc.
• REGI U.S., Inc.
• Reinhold Industries Inc.
• Rexhall Industries, Inc.
• Robbins & Myers, Inc.
• RoboGroup T.E.K. Ltd.
• Rockwell Collins, Inc.
• Sauer-Danfoss Inc.
• Selas Corp. of America
• Sensytech Inc.
• SI Technologies, Inc.
• SIFCO Industries, Inc.
• Skyline Corp.
• SpaceDev Inc.
• SPACEHAB, Inc.
• Speizman Industries, Inc.
• SPX Corp.
• Standex International Corp.
• Stewart & Stevenson Services, Inc.
• Strategic Distribution, Inc.
• SureBeam Corp.
• SystemOne Technologies Inc.
• Tasty Fries, Inc.
• TAT Technologies Ltd.
• Taylor Devices, Inc.
• TBM Holdings, Inc.
• Technology General Corp.
• Tecumseh Products Company
• Tennant Co.
• Terex Corp.
• Thomas Industries Inc.
• Thor Industries, Inc.
• TIMCO Aviation Services Inc.
• Toro Co.
• Triumph Group Inc.
• TurboSonic Technologies Inc.
• United Defense Industries Inc.
• United Industrial Corp.
• UNOVA, Inc.
• W.W. Grainger, Inc.
• Winnebago Industries Inc.
• Wolseley plc
• Zebra Technologies Corp.