You don’t need electricity with this simple but effective design. The weight of the car pushes the gate open. A cattle grid prevents animals from trying to escape the same way.
-via Laughing Squid
You don’t need electricity with this simple but effective design. The weight of the car pushes the gate open. A cattle grid prevents animals from trying to escape the same way.
-via Laughing Squid
Comments (8)
University of Exeter
Streatham Campus
Northcote House
Exeter EX4 4QJ
The balls are stone.
The balls are stone.
LINK
http://www.youtube.com/watch?v=pCvx5gSnfW4&feature=related