Review on Streamlined and Versatile: Midori Multi Aluminium Ruler 42254006 - Get Precise Measurements with Ease by Mike Wallace

This is one of the best tools I've ever owned. - It folds smoothly in on itself and makes a subtle but pleasant clicking sound as metal meets metal when closed - Protractor lets you measure angles - Rib (where the ruler connects and disconnects when folding) does not affect the straightness of the line drawn - the hinge tension is weak enough to open and close easily, but firm enough to maintain the angle - measurement marks engraved and then painted - ruler is small in both height and length (folded ) A few additional notes: For people who measure in inches, it only measures in millimeters and centimeters; Conversion is an option. Even if the hinge was meant to last a long time, I would carefully open and bend the ruler, just in case. This ruler is well designed and I recommend it to anyone who needs a multi-purpose portable ruler.