Window.TabRatio Property (Excel)
Returns or sets the ratio of the width of the workbook's tab area to the width of the window's horizontal scroll bar (as a number between 0 (zero) and 1; the default value is 0.6). Read/write Double .
expression A variable that represents a Window object.
This property has no effect when DisplayWorkbookTabs is set to False (its value is retained, but it has no effect on the display).
This example makes the workbook tabs half the width of the horizontal scroll bar.
ActiveWindow.TabRatio = 0.5