There are two Lifters in every Archivist scanner. The lifters are not symmetrical; they have relief pockets bored in the bottom-most left and right holes to accommodate the heads of the 1/4 20 Furniture Bolts that secure them to the Cradle Runners. The Lifters are made from 18mm Baltic Birch plywood. They connect to the side plates via the Long Arms and Short Arms.
DXF of all Wood Parts: