About Us

Tri-State Instrument Laboratory was established in 1959 in Tulsa Oklahoma. Since its beginning, the company has been recognized as a provider of calibration services, Amp Meters, Ohm Meters, quality electronic test equipment, and electronic measurement equipment as well as other services. Our commitment to our customers has helped us to grow through the years into a company that services the aircraft industry, oil industry, public utilities, electrical contractors, and many small, medium, and large manufacturing industries.

Tri-State is a distributor for internationally recognized products, including those by Amprobe, AEMC, Fluke, Extech, Hoyt, Ideal, Simpson, ThermoProbe, Instrument Transformers Inc., our own TSW Products, and many others.

As a factory authorized modification center for Hoyt & Simpson our experienced staff can design panel meters and controls specific to your applications. We also offer instrument repair and calibration services.

It is our commitment to meet and exceed our customer’s expectations with superior products and service.