This is a real handy gadget; it has the appearance of a calculator, which it is! But there is much more to this device such as the ability to store measurements and even more important is the smart string part, that helps the user measure round and other strange shaped objects, all in this neat little pocket sized device.
These are the features for the Smart String Tape Measure;
It looks like a pocket calculator, but pull out the string and see the measurements appear on the screen.
Being a string measure allows you to bend it for measuring complex and curved shapes.
Up to 3 measurements can be stored and easily accessed in calculator mode for easy calculations.
Switch from inches to mm with one button press.
50″ of string has a test strength of over 20 pounds.
Integrated level and flashlight.
Measures to 3 decimal places.
Batteries: 2 x CR2032 lithium cells (included)
Dimensions: 3.5″ x 2.625″ x 0.375″
Priced at $11.99 in the US and around £7 in the UK
Source [Oh Gizmo]