Abstract: A clamp assembly and method for surgical skin removal including a first clamp with opposed, laterally elongated segments at one end which present aligned, laterally elongated, end edges and a pair of additional clamp elements with respective end edges that mate with the end edges of the first clamp. First, the first clamp is positioned clamping the skin between its laterally elongated segments, with its end edges defining the line along which the skin is to be cut. Next, the additional clamp elements are clamped against the skin with their end edges substantially mating with the end edges of the first clamp. After removal of the first clamp, the skin is cut along the end edges of the additional clamp elements and stitched together there.

Abstract: A digital control system for controlling the flow of traffic in selected directions in response to digital signals transmitted from a common transmitting control unit to multiple separate receiving traffic control units respectively associated with each controlled direction. The transmitting unit includes a transmitter and digital command code generator operative when actuated to transmit a character in the form of a digital signal specific for one of the receiving units. Each receiving unit includes traffic control indicators operative in different modes of display indications visible to traffic flowing in the direction to be controlled by that unit.