Crain is a manufacturer of quality products and accessories for the Construction, Land Surveying, and Mapping Professional. Shop for Land Surveying Equipment, Extreme High-Quality Surveying Tripods, Tripod Replacement Parts, Surveying Bi-Pods, GPS Poles, Cable Management Poles, Measuring Sticks, Measuring Poles, Wire Pulling Gopher Pole, Crain Prism Poles, and Super-Tough Surveying Gear Bags that are all made with the Professional User in mind. If you don't see what you're looking for, please ask. EngineerSupply is a Full-Line Factory Authorized Crain Dealer.