hardwood grading.

1234567
Across
  1. 2. fas combines with f1f boards.
  2. 4. minimum yield of clear wood on a fas board face.
  3. 5. minimun yield of clear wood on a no.1 common board.
  4. 7. 66 2/3 or more of the board is useable.
Down
  1. 1. only one face needs to 83 1/3% clear.
  2. 3. when both faces of a board are 83 1/3% clear.
  3. 6. less than 66 2/3 of a board is useable.