which then retracts into a coil when not in use. Flexible fabric options are great for accurate measurements across circular or jagged surfaces. Measure tapes often have a floating tang or hook at the end， A tape measure is effectively a flexible ruler that is usually sprung on a retractable mechanism for easy storage， helping to measure the distance or size of any space or object. With linear-measured markings usually covering a number of different scales， with lock mechanisms designed to keep the length in place， sometimes magnetic， a measuring tape can be many different materials. The most common tend to use a curved metallic ribbon that remains stiff and straight when extended， to secure them in place when in use which is ideal if working alone or in awkward spaces. ，。