The specific dimensions of the chair design, according to its different functions, in accordance with the anthropometric data and the standards promulgated by the state, continue to test high-speed and reasonable selection of numerical values to meet the requirements of scientific design. For most designers and manufacturers, determining the right furniture dimension is the first and most crucial step in creating ergonomic furniture because the furniture's length, width and height are determined and the spatial relationships created And so are inseparable from the human body and its measurement data.

However, it is impossible for the average enterprise to measure a large amount of data as the designer designs the furniture. Without professional equipment and specialized mapping staff, the data is unscientific and unreliable. At the same time, manufacturers do not have a lot of time and energy to use in data measurement. Therefore, designers should be good at utilizing the existing authoritative data and according to the actual Situation, based on the data obtained by the flexible use of appropriate modifications and adjustments, intentions to truly design ergonomic furniture, master the principles of human scale design mainly from the following aspects

1, understand the national standard data

2, the design is good at using anthropometric data

3, learn to speed and update the size data