12 ft. Stanley Power Lock Tape Measure comes with Certificate of Traceability to NIST (National Institute of Standards and Technology).
These tape measures have been carefully selected and verified for end hook accuracy at the 6" calibration lines.
Information from back of packaging:
Heavy duty die cast metal case
Mylar polyester film coated blade
Tru-Zero feature - hook slides to allow for its own thickness
Special slot in hook allows use of nail as a pivot to draw circles and arcs
Made in Thailand