Defense Industry is R&D and acquisition of weapons system business, which must acquire all elements necessary for calibration, such as standards, technical manuals, facilities, and education and training, in accordance with the Defense Acquisition Program Administration directive when acquiring new TMDEs(test measurement and diagnostic equipment). However, calibration requires different expertise and complexity from development of end item and test equipment, as it is considered as a metrology perspective. In addition, the military is increasing the demand for on-site calibration to reduce the downtime of ATE(Automatic Test Equipment). For this, it is necessary to develop a Portable Automatic Test Equipment Calibrator and a calibration procedure from the design stage of the test equipment. Based on the long-term calibration knowledge and accumulated experience, HCT provides TMDE acquisition and various element development tasks for defense industry company to focus on their business.