THE VERTICAL PLANET
from the Challenger Deep to the summit of Everest · one scale, nothing compressed
$1.50
BALLS BY THE RULES
eleven sports at true relative size — circumference, mass, pressure, and who sets them
Free
PAPER SIZES
the A series · from A0 to A6
$1.50
MOTORCYCLE CLASSES
rake, trail, wheelbase and seat height — six classes drawn at one scale
Free