Mitre clamp Mitre clamp Mitre clamps are designed to hold mitre joints together. The earliest mitre clamps are a simple spring in a C-shape with sharpened points that are sprung onto the outside corner of the mitre joint. The right angled plates are higher than the screws and the red holder. The screws go under the frame (work-piece) to be held, and the red bit clamps down on the lower-edge of the frame. Recent designs are more complicated; a rigid body holds one fixed and one moveable jaw activated by a cam. Examples of the newer clamps are Jim Chestnut's "Clam Clamp"
Mitre is ultimately based on the older καμιλαύκιον although it diverged from the secular headdress at a much later date, after it had already undergone further development. The crown form was not used by bishops until after the fall of Constantinople (1453). The Eastern mitre is made in the shape of a bulbous crown, completely enclosed, and the material is of brocade, damask or cloth of gold. It may also be embroidered, and is often richly decorated with jewels. There are normally four icons attached to the mitre (often of Christ, the Theotokos, John the Baptist and the Cross), which the