Both models feature tough, flexible, lightweight fiberglass tapes in white, printed with black and red markings. 200lb/100kg tensile strength! Graduations printed on both sides.
Keson Surveyors Ropes are the ideal drag chain for rough surveying measurements. Numbers are graduated from the strap handle upward to the end of the rope.
Depth gauges were developed for seismographic measuring. Used by many industries to measure depth. Attach any weight to the snap ring and lower to measure depth.