What you need: ruler, protractor, pencil and paper. Use these to construct a triangle when you know the length of 1 side and the 2 angles at each end of it. In this case use the length 8 cm ...

A man has come up with a handy way to help measure things using just his finger – a tattoo of a ruler. Steffen Karlsen, 31, asked his partner Julie Strømsnes, 35, to create the fun inking on ...

First and foremost, the device can indeed serve as a straight-edge ruler, for measuring, drawing or cutting straight lines. The markings on the beveled edges of its two arms go up to 100 mm on one ...