Measuring tools

Tool	How it works
Eyedropper	Click to select a color and makes it the foreground color.
3D Material Eyedropper	Click to selects Materials when working in 3D Workspace.
Color Sampler	Click to select mutliple colors in an image. Selected color values appear in Info panel.
Ruler	Click and drag to measure distance between two points on image. Measurement appears in Info panel.
Note	Click to add annotation to image. Notes are do not appear on image when printed.
Count	Click to add numeric points that count objects in an image. Create multiple Count Groups to count mutliple sets of objects. Click Clear in Options bar to remove points from image.