Abstract: Disclosed is a vehicle-mounted sequential safety arrow sign which folds to an aerodynamically streamlined configuration when the vehicle is moving and, when erected, provides a sequential lamp, directional indicating display for passing traffic. The display is carried jointly on 3 hinged panels which are folded into a triangular prism configuration by an articulated lever system.

Abstract: A resistor, which can be of either the fixed or variable type, having a metal base covered by an insulating coating over all but an exposed area of the metal. A film type resistive compound or a wire winding covers the insulating coating but overruns it in the exposed area of the metal base and is bonded to the metal base. A suitable conventional terminal member is in conductive relation to the resistive compound covering at a point remote from the exposed area of the base so that the base, itself, may function as one terminal for the resistor.