When all three components of the first set of fringes have been drawn, click the Correction icon  on the menu bar and answer No to the Hint question. The center of the circle system will be calculated and marked by a crosshair and the center’s pixel coordinates will be entered into the results box. Center established Now proceed to mark out the first of the component rings of the kth interference order with  locating crosshairs. After you select Draw Circle, a dialog box appears, asking you to identify which ring you are marking. Ring identification dialog  Make the appropriate selections for the and line position and click Ok, then Exit. A new box appears with the diameter of the line you have just measured and  its identification entered. Proceed to measure the remaining lines of the kth order in the same way, then  repeat the process for the (k-1)th and (k-2)th interference orders. When you are done, you should have all nine components of the orders  listed in the results sub-box.
 When all three components of the first set of fringes have been drawn, click the Correction icon on the menu bar and answer No to the Hint question. The center of the circle system will be calculated and marked by a crosshair and the center’s pixel coordinates will be entered into the results box. Center established  Now proceed to mark out the first of the component rings of the kth interference order with locating crosshairs. After you select Draw Circle, a dialog box appears, asking you to identify which ring you are marking. Ring identification dialog  Make the appropriate selections for the and line position and click Ok, then Exit.  A new box appears with the diameter of the line you have just measured and its identification entered.  Proceed to measure the remaining lines of the kth order in the same way, then repeat the process for the (k-1)th and (k-2)th interference orders.  When you are done, you should have all nine components of the orders listed in the results sub-box.