Tool

Description

Ruler

Activates the ruler tool; click on the image to draw a linear measurement / calibration line
(Mouse Tool; Left Button).

Elliptical ROI

Activates the ellipse tool; click on the image to draw an elliptical ROI (Mouse Tool; Left Button).

Rectangular ROI

Activates the rectangle tool; click on the image to draw a rectangular ROI (Mouse Tool; Left Button).

Polygonal ROI

Activates the polygon tool; click on the image to draw a polygonal ROI (Mouse Tool; Left Button).

Protractor

Activates the protractor tool; click on the image to draw two line segments, the inner angle of which will be measured (Mouse Tool; Left Button).

Show Angles

Shows angles between selected ruler and other rulers on the same image.

Delete All Annotations

Deletes all measurements and other user drawn annotations from the selected image.