Dinosaur Timeline Plastic Ruler – 30cm

Product Description: The Dinosaur Timeline Ruler is plastic and measures 30cm long. It shows measurements in both inches and centimetres. On the inches scale it includes units of 1/16 of an inch and on the centimetre side units of 1 millimetre. On the front of the ruler is an exciting timeline image that shows images of various dinosaurs. Starting from the left and working right, they are from the Triassic Period, around 227 million years ago, through to the Jurassic Period, around 205 million years ago, and finally the Cretaceous Period, around 145 million years ago. On the reverse of the ruler are silhouette images of the main dinosaurs from the front of the ruler showing which period they were from and also their names and what their names mean. The dinosaurs include the plesiosaurus, stegosaurus, diplodocus, velociraptor and tyrannosaurus.