Diameter Tape Measure, Features Magnetic Mount, Case Material ABS Plastic, Tape Measure Type Diameter Tape Measure, Accuracy +/- 2.3 mm, Graduation Marks - Front 1/100 in, Graduation Marks - Back 1/100 in, Blade Length 6 1/2 ft, Diameter Measured - Minimum 1 in, Diameter Measured - Maximum 100 in, Blade Type Double-Sided, Blade Return Type Automatic, Case Type Closed, Lock Type Non-Locking, System of Measurement SAE/Diameter, Blade Width 1/2 in, Tip Style Loop, Blade Material Steel