Scale

Human height

From Preliminary Human Factors Guidelines for Traffic Management Centers (July 1999) FHWA, U.S. DoT

Males (North America)
	5th %	50th	95th
Stature	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">5′ 3 ⁵⁄₈″ 161.5 ㎝	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">5′ 8 ¹⁄₄″ 173.5 ㎝	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">6′  ³⁄₄″ 185 ㎝
Eye height	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">5′  ³⁄₄″ 154.5 ㎝	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">5′ 4 ³⁄₄″ 164.5 ㎝	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">5′ 8 ⁵⁄₈″ 174 ㎝
Sitting height	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">2′ 9 ¹⁄₄″ 84.5 ㎝	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">2′ 11 ³⁄₄″ 90.5 ㎝	3′ 2″ 96.5 ㎝
Body width	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">1′ 6 ³⁄₄″ 48 ㎝	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">1′ 8 ⁷⁄₈″ 53 ㎝	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">1′ 10 ³⁄₄″ 58 ㎝

Females (North America)
	5th %	50th	95th
Stature	4′ 11″ 150 ㎝	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">5′ 2 ⁷⁄₈″ 160 ㎝	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">5′ 7 ¹⁄₈″ 170.5 ㎝
Eye height	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">4′ 9 ¹⁄₄″ 145.5 ㎝	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">5′  ¹⁄₄″ 153 ㎝	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">5′ 5 ¹⁄₄″ 166 ㎝
Sitting height	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">2′ 6 ⁷⁄₈″ 78.5 ㎝	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">2′ 9 ³⁄₈″ 85 ㎝	<span data-sort-value="Expression error: Unrecognized punctuation character "′".">2′ 11 ³⁄₄″ 90.5 ㎝

When standing normally (i.e., with some slump), eye height lowers ∼1.6″ (4 ㎝) for males and ∼1.2″ (3 ㎝) for females.

Extrapolating, eye height is ∼96% of stature, and body width is ∼32% of stature.