A rolled up tape measure.
tape measure definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a tape with marks in inches, feet, centimeters, meters, etc. for measuring
tape measure definition by American Heritage Dictionary
A tape of cloth, paper, or steel marked off in a linear scale, as of inches or centimeters, for taking measurements. Also called tapeline.