Born in 1959 in founder Fred Curran’s basement, Thermal Instrument Company designs, manufactures, and calibrates thermal mass flow meters and flow switches for measuring liquids and gases. Still a family- and veteran-run business in Trevose, Pennsylvania, the company makes its instruments in the USA and supports them with local calibration and field service. Its meters are used in demanding settings from renewable natural gas and petrochemical plants to semiconductor fabrication, with more than 20,000 devices installed worldwide.