It's about nine-tenths as tall as a Bowling Pin.
In other words, 351 milimeters is 0.921 times the height of a Bowling Pin, and the height of a Bowling Pin is 1.09 times that amount.(USBC specifications; tenpin)
It's about half as long as a Woman's Footstep.
In other words, 351 milimeters is 0.53 times the length of a Woman's Footstep, and the length of a Woman's Footstep is 1.9 times that amount.(for healthy, middle-aged woman of average height; single step length)
It's about two-fifths as long as a Man's Footstep.
In other words, 351 milimeters is 0.44 times the length of a Man's Footstep, and the length of a Man's Footstep is 2.3 times that amount.(for healthy, middle-aged man of average height; single step length)
According to studies by The University of Oklahoma's Health Sciences Center, the average length of a man's step is 790 milimeters, for an average stride (two-step's length) of 1,600 milimeters. The average person walks at a speed of about 1.3 m/s
It's about two-fifths as tall as Verne Troyer.
In other words, 351 milimeters is 0.43 times the height of Verne Troyer, and the height of Verne Troyer is 2.3 times that amount.(1969-) (actor)
Verne Troyer, most famous for his role as Mini-Me in the Austin Powers series, is an LP with a height of 810 milimeters. Troyer's first role was as a stunt double for a baby in the 1994 film Baby's Day Out.
It's about two-fifths as tall as General Tom Thumb.
In other words, 351 milimeters is 0.39 times the height of General Tom Thumb, and the height of General Tom Thumb is 2.6 times that amount.(a.k.a. Charles Sherwood Stratton) (1838-1883) (circus performer; height at death)
It's about one-third as tall as Kenny Baker.
In other words, the height of Kenny Baker is 3.1 times 351 milimeters.(a.k.a. Kenneth George Baker) (1934-) (actor)
It's about three-tenths as tall as Hervé Villechaize.
In other words, 351 milimeters is 0.29 times the height of Hervé Villechaize, and the height of Hervé Villechaize is 3.4 times that amount.(a.k.a. Hervé Jean-Pierre Villechaize) (1943-1993) (actor)