138.49 centimeters is equal to 54.59 inches.
Some comparisons to known objects of similar size are:
– The average height of a 9-year-old child (52-56 inches)
– A standard acoustic guitar (41 inches)
– The length of a standard 5-foot bench (60 inches)
– The height of a kitchen counter (34-36 inches)
– The diameter of a regular sized hula hoop (36 inches)