Name       Primary Industry

City

ILX Lightwave Corp	Bozeman
Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (except automotive ammeters and voltmeters)
MSE-Tetragenics	Butte
Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables
Sun Burst Sensors LLC	Missoula
Analytical Laboratory Instrument Manufacturing
Wilray Manufacturing Inc.	Fort Benton
Totalizing Fluid Meter and Counting Device Manufacturing