Another (less drastic) suggestion is to change Excel's zoom.

See Debra Dalgleish's site:
http://contextures.com/xlDataVal08.html#Larger

Dan wrote:

I have created a data validate operation which then shows a drop down arrow
which one can click to view the selectable options. How do I increase the
size of this arrow. Currently it appears small and I would like to make it
appear larger.

Thanks

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Dave Peterson