Patent attributes
A digital measuring tape includes a shell body, a tape, and a tape spool. A coiling shaft is provided inside the shell body. The tape spool is installed on the coiling shaft for rotating with respect to the coiling shaft. The tape is coiled around the tape spool, and a front end of the tape is provided with a hook. The digital measuring tape further includes a grid dial, a grid detector, a circuit board, and a display screen. The grid dial is fixed on the tape spool for rotating. A circumferential edge of the grid dial is provided with a plurality of grids. Rotation of the grid dial and the grids enables the grid detector to produce a detecting signal of rotation of the grid dial. With the detecting signal, a length of the pulled tape is calculated through the circuit board, and displayed on the display screen.
