A tripod stand is provided herein which offers a more reliable extension of the supporting rod’s inner tube. A mapping is maintained between a version-independent logical record identifier and a version-dependent physical record row identifier that correspond to each data record within a plurality of data records of a data table using a logical record identifier to physical record row identifier indirection mapping table. The bushing also includes a gas inlet in communication with the internal cavity such that the nose piece may be pneumatically urged forwardly relative to the housing and into operable contact with the structure. The first ILD layer is disposed on the transistor and levels with a top surface of the gate. The location and contour of the object may be determined when it is determined that the disparity is less than or equal to a predetermined threshold. The housing of the valve is configured to receive at least a portion of the first sealing ring and the first compression insert is configured to compress the first sealing ring received within the housing of the valve by coupling to the housing of the valve.