The construction consists of a box, and the tape measure (usually semi-flexible [[steel]] banding) is rolled up inside the box. The spring-loaded retraction mechanism allows the tape to be pulled out to the desired length and then it will retract back to the case automatically if released from your grip. | The construction consists of a box, and the tape measure (usually semi-flexible [[steel]] banding) is rolled up inside the box. The spring-loaded retraction mechanism allows the tape to be pulled out to the desired length and then it will retract back to the case automatically if released from your grip. |