Founded in 1933 by inventor Robert Wager Sr. we span 74 years of experience and service to our customers. Our long history surpasses many other well know companies such as McDonald’s, Sara Lee, FedEx, WalMart, Nike, Sony, Airbus, Continental Airlines, Toyota, Daimler Chrysler, and Volkswagen. We are the original patent holder of the inverted vent check valve, and offer a full range of rugged vent valves for marine application. Our deck line includes a large variety of deck drains and sounding tubes for both the workboat industry and the yachting industry. Our complete line of smoke opacity meters include full flow, partial flow and in-line systems, as well as emissions monitoring for large ships and locomotives. All meet or exceed every specification requirement set in the United States.