The sturdy 1m Ramp™ was designed by primary teachers for safe and accurate investigations into the relationships between slope or mass and distance or speed. It features a gradient adjuster that can be altered for different angles an open-backed truck for different masses and 4 sets of different sized wheels - 25 35 50 and 62mm diameter. Great for the exploration of forces prediction and planning accurate measuring and timing the collection and manipulation of data and the identification and explanation of trends.Ramp Dimensions:Width - 231mmHeight - 520mmWidth of the base - 231mm Length of the ramp -1000mm