Review on Spifllyer Retractable Measuring Keychain with Built-in Measuring Tape by Chris Dildine

Inch and centimeter markings on scale are inaccurate. Measuring approximately 6 inches/150mm the measurement is perhaps a millimeter/1/32. ". They're nice to give out to kids at a party. Kids can learn how to use a tape measure and do things with it that don't require precise measurements. It was inexpensive, so I won't be returning them.