| 摘要 |
A scope for tuning an automobile engine which may be remotely located from the engine, in use. The scope is connected to an external flexible shaft fitted with a socket for joining to an engine shaft stud, with a rotatable disc in the scope linked to the shaft. A first neon light bulb or fixed pointer is mounted on a point of the periphery of the disc and a second neon light bulb is mounted in a fixed position adjacent the periphery of the disc. Both light bulbs are joined to a flexible lead wire connectable to a spark plug lead. The socket of the flexible shaft is rotatably adjustable to the shaft with a pointer on the shaft, adjacent the socket, aligned with the relative position of the first light bulb on the disc.
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