Americans would define the shoulder angle at alpha/2 14 degrees.

The shoulder angle is very slight, the central ridge forming a carina.

For this reason the body and neck dimensions are lengthened and a shoulder angle provided.

The shoulder angle is an optimum 25 degrees.

The shoulder angle gets steepened from 40 to 60 and the body taper is set at 1 .

Above the shoulder angle there are two shallow spiral furrows.

Figure 2 and the accompanying box show how shoulder angle is defined.

The shoulder angle is simply defined as the angle between the upper arm and the torso when viewed from the front.

Nevertheless, the choice of a high shoulder angle is entirely valid as it maximizes performance.

Which closes the shoulder angle (shoulder and humerus) to less than 90 degrees.