Corrective Slide

A clear acetate overlay, used to determine how close a student’s writing is to the “correct” model in terms of shape, slant, and size.

Similar overlays were available for penmanship systems, such as Zaner Bloser and Palmer.

I guess someone could make a similar overlay using a copy machine and a piece of transparency plastic . . .

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  1. I googled it and found only this:

    Popular Science, August 1948, page 234

    Gregg shorthand students can make an accurate check of word outlines by holding a corrective slide, shown in the photo, over their notes. Printed in opaque red ink, the outlines on the Lumarith plastic slide offer a sharp contrast for comparing characters. Smudges on the plastic can easily be removed with a damp cloth.

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