I think I remember getting one on Designs by Sick once, a long time ago. Maybe it was called "Tiny Font" or something like that? I'm sure someone will know of others as well. Good luck with your search. Hugs, Marji

There has been a tiny alpha at Skeldale House available to members of her group and another very small one at Yummy Factory, recommended to use to embroider around the binding on baby blankets.

You might look at apex embroidery. They have lots of different styles and sizes of fonts. A stitch a half has the chicago style, but it is not script. Chicago measures .37 x .65. Then sewforum has the hemi alpha that measures .42 x .67. I don't remember what style it is. The last place I have a small one from is sticharymall with one named fanciful that measures .89 x .68. It is script style. Most of these are free or very low priced. Hope this helps.

have a look at 'Brush Script' on the EmbroideryDesigns.com web site.

Jolson Designs has some that are 0.5 inches.
http://www.jolsonsdesigns.com/servlet/the-42/035-Satin-Script-Font/Detail
http://www.jolsonsdesigns.com/servlet/the-337/312-Old-Script-Floss/Detail
http://www.jolsonsdesigns.com/servlet/the-490/459-Glass-Slipper-Italic/Detail

Perhaps your embroidery machine has a built in alphabet. It is a problem as most alphabets are just too large, and can't be sized down without getting too dense.