There are two Short Arms in every Archivist scanner. The short arms are symmetrical. They are made from 18mm Baltic Birch plywood. In the Archivist, the traditional 608ZZ skate bearing was replaced with an F608ZZ bearing, which has a flange. This allows the Short and Long arms to have their bearing holes cut all the way through. The Short Arms, together with the Long Arms, connect the lifters to the Side Plates.

PDF Drawing of part:
ShortArm

STL File of Part:
ShortArm

DXF of all Wood Parts:
WoodParts5x5for19mmBalticBirch