Diameter Tape Measure Features Diameter Tape In Steel with Molded Grip Case Material Steel with Molded Rubber Grip Tape Measure Type Diameter Tape Measure Graduation Marks - Back 1/100 in Top (Calibrated in Units of pi) 1/16 in Bottom (Calibrated in Units of pi) Blade Length 6 ft Case Type Closed Lock Type None System of Measurement SAE/Diameter Blade Width 1/4 in Tip Style Loop Blade Material Steel Graduation Marks 1/100 in 1/16 in Graduation Units Feet Inches