I just checked my bookmarks, and Pam Erny
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still selling those wonderful swatch sets.
But the website says that the swatches are now ten inches by four. (On the other hand, the price has dropped to a dollar each: ten swatches for about ten dollars.)
The Shirt Crisp I'm cutting into to make pockets for my linen dress is twenty-three inches wide and more than seven inches long. At the rate I sew -- the journal for my new bike jersey started in June of 2022, when the fabric had been around for some time -- this piece should last the rest of my life.
And whatever project I come up with, I've got the right interfacing.