Post hole digger

A post hole digger is a tool used to dig narrow holes to install posts, such as for fences and signs.

There are different kinds of post hole diggers. The pictured type is jabbed into the ground in the open position until the blades are buried. At that point the handles are pulled apart to close the tool and grab the chunk of soil loosened. They are then pulled out of the ground with the chunk of soil. The process is repeated until the hole is deep enough, or until the hole is so deep and narrow that the handles can no longer be pulled apart fully. This is one of the weaknesses of this kind of post hole digger.