Abstract: A combined axial and torsional crankshaft vibration damper for reciprocating engines comprising a hub fastened to a crankshaft and a inertia ring connected to the hub by a material that transmits a portion of the vibratory movement of the crankshaft to the inertia ring which tends to continue constant rotational movement and resists the vibrational movement and dampens the axial and torsional vibration of the crankshaft.

Abstract: A wiring tool for wire ducts disposed at a 90.degree. angle and having a plurality of teeth forming the side walls, the wiring tool comprising a pair of flat bars joined to form a 90.degree. angle with a riser portion extending upwardly from the juncture of the bars and elastomer strap fastened to the distal ends of the bars to hold the wiring tool at the juncture of wiring ducts to facilitate placing a bundle of wires in the ducts and bending the bundle 90.degree. in the ducts without damaging or removing teeth adjacent the juncture of the ducts.