Use this Clinostat to demonstrate heliotropism and geotropism in plant seedlings. Germinating seedlings are pinned to the cork table which is rotated by an electric motor at four revolutions per hour. The motor is spindle mounted and may be clamped by a thumbscrew so that the plane of the table can be set at any angle between horizontal and vertical. An acrylic cover is provided for the cork table.Base Dimensions: (L)150mm x (W)100mm x (H)175mmDiameter of cork disc: 100mmA spare Acrylic Cover is available to purchase separately.