Research is being conducted at the National Metrology Institute of Japan (NMIJ), AIST, for the purpose of creating a technical base for a national torque standard and constructing a widely accepted torque traceability system. As part of the research, a torque standard machine of rated capacity 1 kN·m was developed. This machine has a variety of features enabling it to perform a precise measurement of torque. The arm length was precisely compensated for the influence of the deadweights loading, and temperature variation. An aerostatics bearing was adapted in order to minimize torque loss caused by friction at the fulcrum. The best measurement capability in the machine was brought within ±50 ppm for the calibration range from 5 N·m to 1 kN·m.