Thank you, Mr. Goldman, for sharing this mnemonic for understanding the lengths of the parts of the hand. This has helped me more than anything I can think of to understand how the hand works and how to draw it. Knowing that the length of the fingers is half the length of the hand – and that the knuckles of the middle finger are half that, and half that again – has taught me more about the hand than anything I can think of.
Also, and not explicitly said in your breakdown – but something anyone can confirm, by placing one hand over the other at a 90 degree angle, or placing the middle finger over the back of the opposite palm – your diagram taught me that the WIDTH of the hand is half the LENGTH of the hand. This has been equally useful in setting proportions so, again, Mr. Goldman … thank you.
-the Centaur