Stewarts-USA is the North and South American distribution arm of Stewart-Buchanan Gauges, Ltd. Founded in 1870, the Stewart-Buchanan Group of companies possess well over 100 years of experience and have built a reputation for manufacturing the highest quality pressure gauges and related products. Recognized as one of the world’s leading manufacturers of pressure gauges, Stewart-Buchanan sells products to more than 50 countries across the globe.