When a tough, all-purpose measuring wheel is needed, nothing fills the order like the Rolatape 400 Series Its 4-foot circumference handles the toughest measuring needs for heavy construction, large commercial operations, utility companies, land surveying and other critical measuring applications When measuring demands are tough, the 400 Series gets the job done. All steel construction - Heavy-Duty strength and durability. 5-digit counter - Records up to 100,000-feet or meters with convenient reset knob.