Abstract: A tool fixture for enabling a mechanic to manually rotate an internal combustion engine which comprises an assembly of components which is placed inside a starter motor housing. The assembled combination of the starter motor housing with the present invention is then attached to the engine's bell housing where the starter motor would normally reside. The gear teeth of the engine flywheel engages a gear fixedly mounted on a first end of a rotatable shaft of the present invention. A nut is fixedly mounted on a second end of the rotatable shaft which is accessible to a mechanic's wrench so that torque may appropriately be applied to the rotatable shaft which accordingly permits the fly wheel to be rotated slowly to any desired position as may be required so as to facilitate for the tuning and other adjustment procedures to be performed upon the engine.

Abstract: A device for providing proper clearance when driving a nail having a head into a surface. The device includes a handle, a blade, an anvil, and apparatus that rotatably attaches the blade to the handle. The handle is held in a hand of a user. The blade extends rotatably from, and is replaceably attached to, the handle and captures the nail between the head of the nail and the surface when the nail is being driven into the surface. When the nail is driven into the surface, the blade provides the proper clearance. The anvil is disposed on the handle, opposes the blade, and is hit sideways to free the blade from between the head of the nail and the surface after the nail has been driven into the surface.