Cheth - The Fence 418
Cheth - Fence (protectioin, seeming separation, watery, Cancer, receptivity-will, intelligence of the house of influence, speech
Yod - Open hand, earthy, Virgo, response, intelligence of Will, touch, coition
Tav - Mark, signature, lead, Saturn, Cosmic consciousness, administrative intelligence, dominion and slavery

From the Upanishads: "The Self is the rider in the chariot of the body, drawn by the senses and horses and directed by the invisible reigns of the mind." A chariot is a portable fence. Note that the charioteer is standing on the chariot, but has his head in the stars. The number of this key, 7, is the number of Netzach on the Tree of Life, Victory. Note that the chariot is still. Victory is already assured and achieved. It is a state of consciousness.

"Protect the place of inner touch and you will rule over the all."
"Take care in your selection of food (physical and subtle), consciously invite the subtle essence into your being, and your inner life will awaken."

A fence is an enclosure A fence surrounds a piece of land. It protects that which is within it.
A wooden fence keeps your animals on your land Like a fence, scaffolding protects and allows construction within. Later, when the structure is built, the scaffolding can come down.