When a measuring tape is extended to a given length, a power lock feature enables the user to secure the tape in place. A mechanism that stops the measuring tape from retracting is usually engaged by depressing a button or lever on the tape. This eliminates the need for the user to hold the tape in place with one hand during a measurement, which can be especially useful for longer measurements or while working alone. Typically, the user must depress a release button or lever in order to retract the tape and unlock the power lock. Modern measuring tapes frequently have power locks, and experts in a variety of fields, including building, engineering and woodworking. The tapes with powerlock options are available for purchase BUY NOW
Features of Power Lock Measuring Tapes
Long-lasting blades with Mylar® polyester film covering and a blade standout for professional-grade routine measurements
HIGH-IMPACT CASE DEFENDS CONTRARY TO DAMAGE: Strong jobsite chrome ABS enclosure
Measurements with a secure blade lock result in NO CREEPING
With stud centre markings of 16 in. and 19-1/5 in., SIMPLIFY FRAMING JOBS.
TRU-ZERO® CORROSION-RESISTANT END HOOK for dependable measuring accuracy
Other variants of stanley tape are available on this link
Source: 1