It's about one-one-hundred-fiftieth as tall as a Bowling Pin.
In other words, 2.50 milimeters is 0.00656 times the height of a Bowling Pin, and the height of a Bowling Pin is 152 times that amount.(USBC specifications; tenpin)
According to the United States Bowling Congress specifications, a tenpin bowling pin should be within 0.7940 milimeters of 381 milimeters in height. The USBC further mandates that certified pins be made of sugar maple wood, unless otherwise approved by the organization.
It's about one-two-hundred-fiftieth as long as a Woman's Footstep.
In other words, the length of a Woman's Footstep is 260 times 2.50 milimeters.(for healthy, middle-aged woman of average height; single step length)
According to studies by The University of Oklahoma's Health Sciences Center, the average length of a woman's step is 660 milimeters, for an average stride (two-step's length) of 1,300 milimeters. The average person walks at a speed of about 1.3 m/s
It's about one-three-hundredth as long as a Man's Footstep.
In other words, 2.50 milimeters is 0.0032 times the length of a Man's Footstep, and the length of a Man's Footstep is 310 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 one-three-hundredth as tall as Verne Troyer.
In other words, 2.50 milimeters is 0.0031 times the height of Verne Troyer, and the height of Verne Troyer is 320 times that amount.(1969-2018) (actor)
Verne Troyer, most famous for his role as Mini-Me in the Austin Powers series, was 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 350 times as long as a Red Blood Cell.
In other words, the length of a Red Blood Cell is 0.003 times 2.50 milimeters.(a.k.a. RBCs, a.k.a. haematids, a.k.a. erythrocyte, a.k.a. erythroid cells, a.k.a. red blood corpuscles) An average Red Blood Cell measures 7.5 µm (micrometers) in diameter. An average human has 20 - 30 trillion red blood cells in their body and each cell completes a circulatory lap in about 20 seconds.
It's about one-three-hundred-fiftieth as tall as General Tom Thumb.
In other words, the height of General Tom Thumb is 370 times 2.50 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 400 times as long as a Nucleus (Cellular).
In other words, 2.50 milimeters is 420 times the length of a Nucleus (Cellular), and the length of a Nucleus (Cellular) is 0.0024 times that amount.(for animal cell)
The nucleus of an animal cell measures an average of 0.006 milimeters. The nucleus is the largest organelle in these cells, accounting for about 10% of the cell's total volume.