carpentry: measuring and marking tools 
Instrument for determining length made up of a graduated, flexible tape of variable length that rolls up inside a case.
Thin metal graduated band; it is narrow and flexible for measuring lengths.
Bent metal end of the tape that is hooked onto an object; it also makes it easier to unroll the tape.
Metal body enclosing the graduated tape.
Divisions of equal length marked on the tape and constituting the units of measurement.
Mechanism preventing the tape from rewinding, making it easier to measure things.