Put the tape measure at the top of your hip bone, then bring it all the way around your body, level with your belly button. Make sure it's not too tight and that it's straight, even at the back. Don't ...

What happens when a pocket calculator and a tape measure have a baby? Why, a Smart String Tape Measure. By the way, that’s the name of the product: Smart String. It’s basically a tape measure for ...

Alan Davies and Marcus Du Sautoy get to grips with the problem of measuring the exact length of a piece of string. They visit the National Physics Laboratory, look at how a metre is defined now, and ...

Alan Davies and Marcus Du Sautoy get to grips with the problem of measuring the exact length of a piece of string. They visit the National Physics Laboratory, look at how a metre is defined now, and ...