STANLEY Tylon Hi-Viz Pocket Tape 5m/16ft. The STANLEY Tylon Hi-Viz Pocket Tape has a corrosion-resistant, long-life Tylon coated blade with both metric and imperial graduations. A positive blade lock ensures accurate measurements. The blade is fitted with a Tru-zero hook that compensates accurately for internal and external measurements. The Hi-Viz, impact-resistant ABS plastic case is fitted with an ergonomic overmould for all-day comfort. Triple riveted construction improves strength and durability.