3:1 rotating hub for fast rewind with a seated handle for protecting the crank assembly during storageExtra wide, dual sided end hook increases grasping surface area; dual prong systems folds up or down allowing user to utilize both sides of the bladeTwo-sided blade provides more versatility for a variety of measuring requirements; designed to work with dual sided end hookAnti-knuckle busting handle includes a built in stop allowing crank to travel above users fingers during retractionErgonomic case optimizes the compact shape with user comfort while holding the case in handDelivers on the attributes surveyors, engineers, and construction professionals are looking for: accuracy, durability, and compact size