10-18-A & 10-18-C Swivels and Hinges what it is and what it ain't

[Yoda]

What is the difference?

wanole,

1. Extend your Left Arm directly in front of your Left Shoulder and parallel to the ground (horizontal). Put your Left Hand into a Karate Chop position.

2. Keeping your Left Shoulder and Body stationary, move the Arm back and forth, just like a gate would swing on its hinges. This is a horizontal hinge action.

3. Once again assume the position in #1 above.

4. This time, do not swing your arm back and forth. Instead, keep it still, and twist the forearm. First palm down. Then, palm up. This is a Swivel Action.