Only the knuckle of a butt hinge is visible when the door is open.

Name: Only the knuckle of a butt hinge is visible when the door is open.
Brand: Quizplus
Rating: 4.8 (31 reviews)

Question

Quizplus · Accepted Answer

Both the knuckle and the leaves of a butt hinge are visible when the door is open, as the hinge mechanism involves the knuckle (the cylindrical part where the pin goes) and the leaves (the flat parts that attach to the door and frame) being exposed.

Only the Knuckle of a Butt Hinge Is Visible When