This Stanley Open Reel Fibreglass Tape has both metric and imperial graduations.
  Blade Length: 30m/100ft
Blade Width: 13mm
Accuracy: EC Class III
The Stanley Open Reel Fibreglass Tape has a 13mm wide, durable fibreglass blade with easy to read markings in both metric and imperial graduations.  The blade is non-corrosive, printed on both sides for easier reading and resists fading.
  Its high-visibility yellow ABS case makes it easy to find on the job site and there is a bi-material grip for comfort.  The folding rewind crank with rotating fingertip knob makes blade rewind smoother and easier.