This small strong cardboard test box has been specially designed to enable a range of investigations to be carried out. The pre-punched holes are compatible with the GIGO range of gears. Together with the paper sticks or dowel, children can investigate gearing up and gearing down and the purpose of an idler gear, as well as producing motorised models. The small test box is also an ideal chassis for a buggy. The spacing is also compatible with the large Test Box, making these two systems inter-changeable.
