Patent ID: 7654939

Claim:
A technique plate comprising a dimension ring having an external edge having a standard thickness and a diameter; an internal edge; two side surfaces; and a clamping protrusion being formed on and protruding radially inwards from the internal edge of the dimension ring; two clamping disks being mounted on and clamping the clamping protrusion of the dimension ring, each clamping disk having an inner surface; an outer surface; a hub being formed on and protruding from the inner surface; a through hole being formed centrally through the hub and having an inner edge; a rim being formed on and protruding from the inner surface of each clamping disk; multiple spokes being formed on and protruding radially from the inner surface between the hub and the rim; and multiple fastener holes being formed respectively through the spokes adjacent to rim; a sleeve being mounted in the through holes of the first clamping disks; and multiple fasteners being mounted respectively through the fastener holes of the clamping disks.