A system and method for biomolecular sensing are disclosed. The only tools which are required are a conventional screwdriver, pliers for cutting through and cutting off the cable of the cable probe, andor a cutting tool like a blade for exposing the electrical conductors contained therein. The seal contacts the inner wall surface of the bore of the production tree, dividing a lower portion of the bore below the seal from an upper portion of the bore above the seal. The interferometer further includes a first plate disposed between the beamsplitter and the first mirror and a second plate disposed between the beamsplitter and the second mirror. Each trough has a plurality of openings to allow air to pass through the trough and out of the wheel to hold lightweight articles in the troughs against the force of gravity.