Heavier or lighter? Taller or shorter? Compare linear measurements and use the tree-themed balance to compare weights. Balance arm snaps into place for quick assembly. Calibrates easily with sliding compensator clips.
Includes 24 caterpillars in two sizes and two weights (8 large, 16 small), 36 leaves in two sizes and two weights (12 large, 24 small), and Activity Guide.
Balance measures 15.75"L x 4"H.