Double Gear Transmission Elements offers technical help to OEMs and Engineers for manufacturing, servicing or reverse engineering gear technology. The company has now introduced Gearbox Reference Hand Book. This is a printed handbook that would help gearbox manufacturers by providing component designs of modular type gear, assembly drawings, part drawings with tolerances and manufacturing details for every gearbox and also 1:1 AutoCAD drawings. The handbook is complete with readymade gearbox designs, calculations and manufacturing drawings to build any type of gearbox instantly. Handbooks are available for building Hoist, 2-, 3- and 4-stage gearboxes.