Path Array

Description
The tool Array creates a new path by duplicating another path several times at a certain interval distance.

Usage

 * 1) Select the operation you want to repeat
 * 2) Press the  button
 * 3) Press
 * 4) Adjust the desired properties at the data box

Properties

 * The type array (polar, linear one ore two directions)
 * The spacing between the array copies for each direction
 * The number of copies (not counting the original) for each direction

Scripting
FreeCAD Scripting Basics.

Example: