It's about as long as a Woman's Footstep.
(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, 660 milimeters is 0.84 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, 660 milimeters is 0.81 times the height of Verne Troyer, and the height of Verne Troyer is 1.2 times that amount.(1969-) (actor)
It's about three-fourths as tall as General Tom Thumb.
In other words, the height of General Tom Thumb is 1.4 times 660 milimeters.(a.k.a. Charles Sherwood Stratton) (1838-1883) (circus performer; height at death)
General Tom Thumb was an LP with a height (at his death) of 910 milimeters. Thumb stopped growing at 640 milimeters when he was five years old, but resumed growth in his teens which continued through the remainder of his life.
It's about three-fifths as tall as Kenny Baker.
In other words, the height of Kenny Baker is 1.7 times 660 milimeters.(a.k.a. Kenneth George Baker) (1934-) (actor)
Kenny Baker, most famous for his role as R2-D2 in the Star Wars film franchise, is an LP with a height of 1,100 milimeters. Baker and his wife, Eileen, both made brief appearances as the small, woodland creatures known as Ewoks in the 1984 Star Wars movie, Star Wars: Return of the Jedi (a.k.a. Star Wars Episode VI: Return of the Jedi).
It's about one-and-three-fourths times as tall as a Bowling Pin.
In other words, the height of a Bowling Pin is 0.578 times 660 milimeters.(USBC specifications; tenpin)
It's about half as tall as Hervé Villechaize.
In other words, 660 milimeters is 0.55 times the height of Hervé Villechaize, and the height of Hervé Villechaize is 1.8 times that amount.(a.k.a. Hervé Jean-Pierre Villechaize) (1943-1993) (actor)