import ij.*;

gui.message("Live measurements");

numberOfImages = 25;

// update will automatically snap a new image and display it
// caveat: the image window must be already open in the GUI (press  
//"Snap Image" at least once)
// before running this script

for (int i=0; i < numberOfImages; i++)
{
	gui.updateImage();
	IJ.run("Measure");
}