Abstract: A system utilizing multiple spacer and shim elements that nest together to raise a closet ring to the height required for the particular floor being used in a given application for a toilet bowl installation. The nested spacer and shim elements are placed on the rough floor and receive the closet ring mounting flange. Bosses on an upper side of a lower spacer and shim element are received in detents in a lower side of a corresponding upper spacer and shim element so that the spacer and shim elements are held securely in their nested position so as to form a registered spacer/shim stack. The spacer and shim elements will typically be ¼″ thick. The spacer and shim elements further include breakaway mounting tabs positioned about an outer circumference of the main body of the spacer and shim elements.

Abstract: An apparatus for performing a task in a confined space having an access port. The apparatus comprise: a confinement box securable to the access port of the confined space; a shell extending from the confinement box; a teleoperated arm movable between a retracted position, in which the teleoperated arm is disposed within the shell, and a deployed position, in which the teleoperated arm extends through the access port and into the confined space to perform the task; and a control system for commanding the teleoperated arm.