Flexible centimeter tape measure all the circles of his Gela. Neck circumference is measured by the average transverse line at the "head straight". Waist is measured at the narrowest point of the shoulder - in the widest circle bent at the elbows with strained muscles in the middle and upper arm freely lowered his hands.
Chest circumference was measured at the level of the nipples on the inhale, exhale and rest. Normally, the chest circumference at rest, at least half, and the waist - no more than half of the growth. 
Proportionality of the thorax can be determined by the index Erisman. It is calculated by subtracting the index of chest circumference (obtained when measured in the quiescent state), a sum equal to half of the growth.