What does it mean to use the chest as a template?

A human body template refers to a plane model of a human body made of plastic or thin metal sheet. The establishment of human body template is generally based on the statistical data of anthropometry, which reflects the accurate relationship of various parts of human body in proportion.

A complete set of human body templates usually consists of a single template, which conforms to the human body size data of male and female 10, 50 and 90 percentiles respectively. Because the joints of the human template can move freely anywhere, it can be widely used in the work plane design of various occasions.