A system for cleaning, heating and purifying contaminated aqueous solutions. A portably mountable fiber optic cable attenuator is installed to each support post. Packages may be formed with a particular appeal to consumers with common characteristics. A horizontal adjuster produces a rotation for the first module holder so that gaps between the first and second modules are parallel. The shuttle is biased to engage a central portion of the exterior guide if rotation of the input sleeve moves the shuttle past first or second ends of the groove to prevent the rotary encoder from being damaged by over-rotation of the input sleeve. The joint also comprises a lower annular portion having a radially inner boundary attached to the lower bearing mount.