Not in a savant way, but I did have an early strength:
At the age of three, I could keep a graphic score of a concert in my head, sing along on different voices and shift between the them, according to where my voice could keep up. Three year olds don´t do that, so it was a splinter skill.
Otherwise, when I construct something, I can see parts come together and work, and check for errors (at a modest level), where after I do the measuring and make the parts.
And, like Mikeman, I can read from a memorized image of a text.
I can imagine how handeling things feels, so I can do it afterwards - like doing pottery after having watched closely and felt it in my hands once.
So, all in all, I am a bit more visual/tactile than most people, I know.
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Femaline
Special Interest: Beethoven