What do you call those measuring devices on a wheel?

Question

They are used to measure property sometimes...I don't know how else to describe it. It's on a long stick with a wheel at the bottom & it gives inches/feet. I need to know what it's called. THANKS! :)

Answer 1

Oddly enough they are called Measuring Wheels. See

http://www.engineersupply.com/category.aspx?categoryID=4&affid=12

Answer 2

1. Wheel Pedometer - is the type you may see a road surveyor using and looks like a wheel on a stick,
2. Distance Measuring Wheels
3. Surveyors Wheel
4. perambulator
It depends on who you ask. The four references below are in order, as above. Nowadays they use a laser.