The Stabila BM150 Top Read Pocket Tape comes with metric scale and internal-dimension display. A viewing window allows internal dimensions, such as the clearance of a window bay or doorway, to be read easily. The blade features a hard-wearing coating to protect the scale. Red tens allow convenient reading of measurements. A moveable start hook allows for accurate measurements. There is also a push brake for stopping and locking the blade. Specifications: Length: 3m.Tape Width: 16mm.Accuracy: Class II.