A non-driving axle. Supports the vehicle and carries freely rotating wheels.

Top or bottom piston positions in the cylinder when the crankshaft is at 0° or 180° of rotation.

Opposite of acceleration. Reducing velocity or speed. Slowing down.

Brake Meter for recording rate of deceleration during braking for test purposes.

A number system that uses a base of 10.

The position of numbers after (to the right of) the decimal point.

The top of the engine block forming the mating face for the cylinder head.

Equipment made to work specifically with one system or one manufacturer's vehicle range.

Same as a normal socket but longer to allow it to be used on a component such as a spark plug.

Untrue and harmful information.