Discover the mighty 5-in-1 Outdoor Measure-Mate ! Learn explore and experiment with measurements in a new and exciting way. Features up to five different tools including ?Vertical measure - to measure freestanding objects Callipers - to measure internal and external dimensions of an object Trundle wheel - to measure distances (1 click = 1 metre) Spirit level - to discover whether a surface is level (horizontal) or plumb (vertical) and a Measuring stick - to be used as a ruler. Set includes an activity guide featuring fun ways children can use the Measure-Mate .