"In 1939, Gilson introduced our Testing Screen in response to Mining and Highway Construction industry demands for greater control of material quality. The Testing Screen is still a center piece in most modern aggregate labs, but Gilson has not been standing still. As the company has grown, so has our reputation for superior expertise, innovation, and development of particle size analysis and sample dividing equipment. While we constantly develop and seek out new products, our philosophy remains the same; we offer high-quality products at competitive prices, and back up our great customer service with dedicated technical support...". Source: https://www.globalgilson.com/