Great Innovations has created a new reference tool for engineers, designers, drafters, and machinists. The Engineering Slide Chart includes technical information from many of the quick references that are commonly found in the work areas of mechanical designers and CAD users. All of this information is compiled for both English (Imperial) and Metric systems in a single screw chart. The Engineering Slide Chart is available in a durable plastic version, as an iPhone and iPad App, Android phone App, and soon available on Android tablets. Great Innovations' screw chart serves engineers throughout their careers and is rapidly becoming a helpful time saving industry standard