Flag of Israel — alternate construction sheet with star diameter set to 66 units and isometric grid overlay
Own work. The diameter of the star is not defined in legislation.  This construction sheet uses a diameter of 66 units which is the value given by Flags of the World (FOTW).  FOTW shows that if the diameter is exactly 66 units, the star can be overlaid with a perfect isometric grid.  This construction sheet includes the grid.
MapGrid