Originally Posted by
misseva
My 12" ruler is actually 12-1/2" square because it allows for 1/4" seam all around. I recently had a "duh" moment when cutting out 12" blocks. Thought I made a mistake but didn't. Is your 12" block ruler actually 12" (finished block would be 11-1/2") or 12-1/2" (finished block would be 12")?
It's 12½". Thanks for the enlightenment. I, too, wondered about that extra ½" but seam allowances make perfect sense.
Sorry to have been so long replying. I have been out of state and just got back today.