What simple machines are in a tape measure?

A tape measure primarily incorporates two simple machines: the lever and the wheel and axle. The lever is represented by the tape itself, which pivots at the point where it is anchored, allowing for easy extension and retraction. The wheel and axle mechanism is utilized in the retraction system, enabling the tape to wind back into the casing smoothly. Together, these simple machines enhance the functionality and ease of use of the tape measure.