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Triangle Manufacturing, Inc. (TMI) opened its doors in Montrose April 1st, 2010. Currently offering "Made in the USA" products and services including sales, repair and calibration of testing equipment.

Our in-house calibration service provides our customers with a NIST traceable solution for both pressure and flow instruments. 

With our in-house engineering and CNC machining capabilities, we are able to take an idea and bring it to market in a quick manner. If you have a need or idea of a product, we can work with you to get it made.

TMI originally started in 1986 manufacturing tank and line testing as well as oilfield pump and monitoring systems, TMI changed it's name to Triangle Environmental, Inc. in 1990 and expanded into environmental testing service work. In 2009 the testing service side of the business was sold and our name again became TMI.  
News!

The LT-3 Dual Line Tester has been approved for flex-type Lines.