A new study revealed how hand shape can be identified via measurements on 3 hand dimensions, including: finger length, palm width & palm length.

The study points out that each of the so-called ‘elemental hand shapes’ (earth hand shape, fire hand shape, air hand shape, and water hand shape) can be recognized by it’s proportions relative to each other.

The picture above demonstrates how your hand shape can be identified via the ‘hand shape profile’ – which concerns a code with three elements involved, where the combination reveals the (elemental) hand shape type.

More details are discussed in the article: 

Finger length proportions & elemental hand shapes!