a visualization device for use with a loading tray includes a frame comprising a floor , a first side wall extending generally perpendicular from the floor , and a second side wall extending generally perpendicular from the floor and spaced from the first side wall . the visualization device further includes a mirror abutting the floor of the frame . a magnifying glass may also be supported by top edges of the first and second side walls , or by runners coupled to the top edges of the first and second side walls . the visualization device may be slideably disposed in a reservoir of a loading tray .