The Scale Bar feature displays directly on the Interactive Map. It appears as a yellow bar with a "0" at the left end and a number with the units displayed at the right end. The bar length of the Scale Bar never changes. The number at the right changes according to the current scale of the Interactive Map. The units also change if you change them with the Set Units button. You can use the Scale Bar on the map to measure real-world distances. Again, notice the units displayed after the number at the right of the bar. The default units for all IDNR interactive mapping websites are miles.