主权项 |
1. A measuring tool of foot dimensions, comprising three long strip scales, being first scale (a), second scale (b), and third scale (c), all of which have the same width and thickness, one end of each of the first scale (a), second scale (b), and third scale (c), comprises a corresponding slender through hole, being first through hole (a1), second through hole (b1), and third through hole (c1); each of the slender first through hole (a1), second through hole (b1), and third through hole (a1) is parallel to a long side of the corresponding long strip scale; a length of the first through hole (a1), second through hole (b1), and third through hole (c1) is equal to a width of the first scale (a), second scale (b), and third scale (c); a length of the third through hole (a1) is 2-4 times the width of the first scale (a), second scale (b), and third scale (c); a width of the first through hole (a1), second through hole (b1), and third through hole (c1) is equal to a thickness of the first scale (a), second scale (b), and third scale (c); and graduations of the first scale (a), second scale (b), and third scale (c) are accurate within millimeter. |