Last week I found these dressmaker rulers at a thrift store. I took their photo on the patio because the packaging they're in is disgustingly dirty. I snapped the picture, threw away the wrappers, and washed the rulers.
This will be new for me. All these years I've made measurements using notches and seams as guide points for marking and then tracing in the curve on my own. Now I have curvy rulers to help.