It's about as long as a Woman's Footstep.
In other words, the length of a Woman's Footstep is 1 times 640 milimeters.(for healthy, middle-aged woman of average height; single step length)
It's about four-fifths as long as a Man's Footstep.
In other words, 640 milimeters is 0.81 times the length of a Man's Footstep, and the length of a Man's Footstep is 1.2 times that amount.(for healthy, middle-aged man of average height; single step length)
It's about four-fifths as tall as Verne Troyer.
In other words, 640 milimeters is 0.79 times the height of Verne Troyer, and the height of Verne Troyer is 1.3 times that amount.(1969-) (actor)
It's about seven-tenths as tall as General Tom Thumb.
In other words, the height of General Tom Thumb is 1.4 times 640 milimeters.(a.k.a. Charles Sherwood Stratton) (1838-1883) (circus performer; height at death)
It's about one-and-two-thirds times as tall as a Bowling Pin.
In other words, the height of a Bowling Pin is 0.595 times 640 milimeters.(USBC specifications; tenpin)
It's about three-fifths as tall as Kenny Baker.
In other words, 640 milimeters is 0.58 times the height of Kenny Baker, and the height of Kenny Baker is 1.7 times that amount.(a.k.a. Kenneth George Baker) (1934-) (actor)
It's about half as tall as Hervé Villechaize.
In other words, 640 milimeters is 0.53 times the height of Hervé Villechaize, and the height of Hervé Villechaize is 1.9 times that amount.(a.k.a. Hervé Jean-Pierre Villechaize) (1943-1993) (actor)
Hervé Villechaize, most famous for his role as Tattoo on the 1978-84 television series Fantasy Island, was an LP with a height of 1,200 milimeters. Villechaize's form of dwarfism, spondyloepiphyseal dysplasia-brachydactyly and distinctive speech (SED-BDS), is also known as "Tattoo dysplasia" or "Fantasy Island syndrome."