Permanent, laser etched 1-Feet increments on the tape, More accurately measure the depth of conduit runs and determine the amount of tape left to pay out, Polypropylene case and handle are extremely durable, offer maximum in shock and impact resistance, Raised finger grips help transfer 100-Percent of the winding power from your hand and fingers, Round inner ring design provides a smooth, consistent and comfortable surface for winding and rewinding