how to increase size of icons on excel toolbar

1.Go to your Start Menu and type Font into your search box an hit enter onyour keyboard.
2.The Font Manager will come up go to the left and select Change Font Type.
3.A new window will pop up and on the right side you will see Small,Medium and Large select Medium and select Apply.
4.You will see a window pop up and it will say,You must log off your computer to apply these changes,select log off now.
5.Log back on and you will see your type on your desktop is larger.

look here:

Set row height and column width in millimeters using VBA in Microsoft Excel

http://www.exceltip.com/st/Set_row_height_and_column_width_in_millimeters_using_VBA_in_Microsoft_Excel/489.html

1. Select any cell in the row you want to adjust. If you select a cell range that includes cells in multiple rows, you can adjust the row height for more than one row at a time.
2. Display the Home tab of the ribbon.
3. In the Cells group, click Format. Excel displays a selection of choices.
4. Click Row Height. Excel displays the Row Height dialog box. 
5. Adjust the value in the dialog box to reflect the desired row height.
6. Click on OK.