You will find the tools at the top in the viewer.

Navigation tools:

With the navigation tools you have the below functionalities:, 

(1) Zoom with the mouse button when you are in the pdf

(2) Zoom in

(3) Zoom out

(4) Fit the document in view (Document Width, Document Hight)

(5) Zoom to 1 on 1 pixel  and back to actual size. You can also set the Monitor Resolution.

(6) Move document either in the navigator or with the "hand" tool.

Orientation tools:

With the orientation tools, you can 

(1) Rotate the view on 90 degrees

(2) Mirror the view

Measure tools:

With the measure tools you have below possibilities.

(1) within the submenu of the ruler icon you can

     (a) View Distance and Angle

     (b) View X and Y position

     (c) View Width and Height

     (d) Set Ruler Angle to CCW

     (e) Change measurements display color

     (f) Reset measurements display color

(2) Measure the color perventage at one point 

(3) Check Bar Codes

(4) Check Braille

(5) Within the submenu of the Caliper you can

     (a) Draw horizontal parallel lines or vertical lines

     (b) Fix the parallel lines and change the place where they are fixed

     (c) Change the gap with the buttons or directly by entering a number

     (d) Again change the place just by clicking on the new place you want to have it

Text tools:

With the text tools you can

(1) Search for a text within the artwork

(2) Detect the font properties of the texts in the artwork

(3) Search for text of an dedicated font size

Comparison tools:

With the comparison tools you can

(1) View the current version

(2) View the selected reference version

(3) View both versions - blinking

(4) View both versions overlapped

(5) View both versions with highlighted differences

(6) View both versions side by side with highlighted differences

Annotations tools:

Annotations tools and annotations made out of measure tools are explained in a separate page - please go to How to do annotations.