An apparatus for the demonstration of heliotropism and geotropism in plants.

Germinating seedlings are pinned to the cork table which is rotated by an electric motor at 4 revolutions per hour. The motor is spindle-mounted and may be clamped so that the table can be positioned at any angle between horizontal and vertical. The slow rotation in the vertical or horizontal planes cancels out the effects of gravity and directional light.

• Diameter of cork disc is approximately 100mm
• An acrylic cover protects the seedlings from draughts
• Operates from 220 to 240V AC, 50 to 60Hz
• Eisco type BI0244