Using Failure Detectors to Solve Consensus in Asynchronous Sharde-Memory Systems (Extended Abstract)

An illuminable wrench of the ratchet type in which the tool handle defines a receptacle for battery cells. A lamp or bulb is retained in the head of the tool and is connected in a circuit to the batteries and may be actuated to illuminate a work area. In one embodiment of the present invention, the bulb is secured in a rotatable assembly adjacent the head so the bulb may be rotatably positioned to direct illumination to the desired work area. In still another embodiment, the battery housing and light are adapted to be detachably secured to a conventional wrench.