1 city ruler =33 cm, 3 1 yard =2.4 feet waist = 80 cm, and 36 yards =2.8 feet waist.

Waist circumference refers to the horizontal circumference of the waist through the umbilical point (om), which is a comprehensive index reflecting the total fat and fat distribution. The measurement method recommended by the World Health Organization is that the subjects stand with their feet 25 to 30 cm apart and their weight is evenly distributed.

29 yards =2.2 feet waist =73.5CM, 30 yards =2.3 feet waist =77CM, 32 yards =2.5 feet waist =83.5CM, 33 yards =2.6 feet waist =87CM, 34 yards =2.7 feet waist =90CM, 38 yards =2.9 feet waist, 40 yards = 3.

Extended data:

The traditional units of length in China are Li, Zhang, Chi, Inch, Xun, Jie, Fu, Zhi, Yi, Bu, Chang, Ya, Yan, Ji, Rail, Luo, Millimeter, Li and Min. The basic transformation relationship is as follows:

1 ft = 10 ft; 1 ft = 10 inch; 1 inch = 10 points; 1 = 10%;

1 sheet ≈ 3.33m; 1 ft ≈3.33 decimeter; 1 inch ≈3.33 cm;

1km = 1000m； 1 meter (m) = 100 cm; 1 cm =10mm;

1 Li = 150 sheets = 500m; 2 Li = 1 km (1000 m).

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