For objects larger that your iPhone, use your iPad, it’s a universal app! All kidding aside, when measuring objects longer than your iPhone’s screen, swipe the ruler to the left to extend it one ...

An introduction to the measurement of large objects such as a blue whale ... Students could measure the height of the vehicles using a ruler and work out whether they will pass safely under ...

The length of an object is the distance from one ... length and height using centimetres and metres. A ruler is a useful tool for measuring smaller lengths. Here is a ruler. This is a centimetre ...