Diameter Tape Measure Features Double-Sided Case Material Metal Tape Measure Type Diameter Tape Measure Accuracy +/- 0.100 in Graduation Marks - Front 1 cm (Top) 1 mm (Bottom) Blade Length 2 m Diameter Measured - Minimum Not Applicable Diameter Measured - Maximum 2 m Blade Type Double-Sided Blade Return Type Automatic Case Type Closed Lock Type Non-Locking System of Measurement Metric/Diameter Blade Width 6 mm Tip Style Loop Blade Material Steel Graduation Marks 1 mm