UI Slider Tool     

The UI Slider Tool allows you to insert a scale on top of your image.  Click on the UI Slider Tool and drag 'n' drop it onto the image viewer.  A 0 - 100 scale will appear. You can move the scale around, change the size, stretch it out, as well as rotate it, by grabbing the smaller boxes along the edges.




Right-click on the UI Slider rectangle to bring up the UISliderEntity edit box.  Selecting the Rectangle tab allows you to enter specific values for the UI slider entity rectangle used, including center X, Y, width, height and aspect of width/height. After entering your values, click Apply and then Close. The UI slider will be adjusted according to the selections.   
UILineEntity_image



Selecting the Entity tab allows you to adjust the colors, thickness and visibility of the UI slider profile marker.  You can also select a Coordinate System.  Make the necessary adjustments click Apply and then Close.  The values will be updated according to your selections.