Johnson Industries is the Original Equipment Manufacturer (OEM) for Commissioning and testing of the BSDS and is the only source capable of providing OEM parts, proprietary calibration standards, tech... Johnson Industries is the Original Equipment Manufacturer (OEM) for Commissioning and testing of the BSDS and is the only source capable of providing OEM parts, proprietary calibration standards, technical data, and authorized maintenance services within the required timeframe. Supported equipment includes the 60T Craft Crane upgrade DC-41.