1958 incorporated in Michigan. Began production in Detroit producing instruments for leak testing automotive brake systems. (Model 109) 1963 Introduced the Models 120/122 as a high working pressure (6000 PSIG) low cost di......1958 incorporated in Michigan. Began production in Detroit producing instruments for leak testing automotive brake systems. (Model 109) 1963 Introduced the Models 120/122 as a high working pressure (6000 PSIG) low cost differential pressure gauge for hydraulic filter monitoring. Expanded distribution system via Manufacturer’s Representatives. 1971 Produced first portable back flow prevention Test Kit (830) and first portable hydronic balancing valve Test Kit (831). Produced first fuel & lube oil monitoring units for stationary gas turbines (Model 111). 1974 Built and moved into a new manufacturing facility in Troy, MI Introduced a low differential (0-10 in. H2O), high working pressure (0-6000 PSIG) gauge (Model 105). 1988 Built and moved into current 34,000 square foot climate controlled manufacturing facility. Introduced the Models 140/141. Upgraded hydraulic and pneumatic fatigue test and burst equipment. Added new CNC mill. 1997 Achieved 3rd party Quality Assurance System approval complying with CSA B51-95 Appendix H. Upgraded CAD system and added two additional workstations. Added two CNC horizontal machining centers. 2000 Added 11th and 12th CNC machine tools. Introduced two molded plastic gauges for the filter market. Upgraded CAD system hardware. Produced 300,000th Model 120. 2001 Introduced 444 and 555 for OEM applications monitoring the performance of Coalescing Air Filters. 2003 Introduced "The Ultimate Backflow Test Kit". The 845 family of test kits in 5, 3 and 2 valve configurations to serve the Backflow Testing Market. Introduced the compact 522 indicator for the Agricultural Irrigation Filter Market & Model 123 Piston Gauge for High DP, High Working Pressure Applications.