Two sticks. One board.

Set a pair of winding sticks on the face and read the wind: cup, bow, or a quiet true board.

Keep a card for each board. Pin the one still on the bench, look up a species, and come back to the same reading the next time the pile is stickered.

Avia Twist is a shop aid for the person who already knows which edge to plane. It keeps the numbers next to the wood.