The Mobile Base, Model 88863, is a mobile base with four rubber-tire swivel casters that is specifically designed so that a Workstation, Model 8134, can be mounted and locked on top of the base. This allows easy movement of the workstation in the laboratory classroom, just as with a Mobile Workstation, Model 8110, but without any storage cabinet or workspace. An additional Workstation, Model 8134, can be mounted and locked on the first Workstation to double the space available for EMS modules.