As long as you have a CD, business card, a dollar bill, or even your finger, you can use your iPhone to measure anything. Just take a picture with MeasureCam and drag the virtual ruler over the object to measure it.

Just take a photo with the measuring item (finger, CD, etc.) flat against the object you want to measure. Once you identify the measuring item in the picture, you can measure anything on the same plane as it.

Sorry, iPod touch users, but since your devices don't have cameras, this app isn't very useful to you.

NOTE: Measurements taken with the camera are not as accurate as measurements taken with standard tools. Do not use MeasureCam for construction or other uses where inaccurate measurements could case personal injury or property damage.