DURABLE BLADE FOR LONG LIFE: Abrasion resistant polyester film coated blade coating provides up to 10 times more resistance to abrasion than a standard lacquered blade, increasing the life of the tape and reducing wear on most heavily used sections of the blade TRU-ZEROHOOK for precise inner and outer measurements, moving back and forth along the securing rivets to account for the hook thickness FAST AND EASY MEASURING: The STANLEY® PowerLock® tape measures innovative Trusted by professional users for decades, the innovative STANLEY® Micro PowerLock® slide lock mechanism was one of the first of its kind when launched in 1969making measuring faster and easier than ever before. Now in its current contemporary format, the STANLEY® Micro PowerLock® 3M/10' (19mm wide) Tape Measure features a strong, bright yellow 19mm blade with clear and legible markings and Class II accuracy providing a reassuring +/-0.5mm error tolerance at 1m, making it suitable for a multitude of professional app