Conventional Grading vs.
Subtraction Grading

1) Take item off pile. 1) Take off scale and listen.

2) Place item on scale. 2) Place item in box.
3) Decide grade? 1) Take off scale and listen.
4) Take item off scale. 2) Place item in box.
5) Place item in box. 1) Take off scale and listen.
6) Take item off pile. 2) Place item in box.