On the side bridge plate connecting the two sides of the device a window has been milled that holds a 25mm wide and 32mm tall interference filter, 7mm in thickness. The filter is marked on its side '205'. It is a deep blue color orthogonally viewed, but pales to near-transparency as the angle increases.
The Vexta Phase 2 motor is attached to a gear-reduction drive to which the drive belt is attached. Part number of the motor is PM 266-01GK (DC 6v, 1.2A). The reduction drive is a type OM 2GK5KA. The overall dimensions of the system are approximately 10.5 inches long, 2 inches wide (not including the side bridge-plate), and 7.5 inches tall. There is an opto sensor for travel. Both the motor and sensor have cables with connectors attached. The mating connectors along with a bit of cable are attached to the connectors.
The system is in perfect condition, but we have not tested the motor drive.