Chongqing University of Technology 1 article published in JoVE Engineering Measurement of the Hand Transmitted Vibration of the Human Hand Arm System During Operation of a Hand Tractor Shiqing Lu1, Rui Jiang2, Xinyi Xiao3, Yong Li1, Xia Huang1, Kun Song1, Changming Chen1, Jun Ding1 1School of Mechanical Engineering, Chongqing University of Technology, 2College of Mechanical and Electrical Engineering, Wenzhou University, 3Mechanical and Manufacturing Engineering, Miami University Here, we present a standardized method for measurement of the hand transmitted vibration from handles of a single-axle tractor with special reference to changes in grip force and vibration frequency.