Abstract: A table surface (11) adjusts in set increments to a variety of vertical positions. The table surface (11) moves only in a vertical direction, as determined through use of a vertical guide (16) that traverses a vertical tract (15). A tooth (35) and pawl (40) assembly controls the vertical disposition of the assembly such that the table surface (11) is incrementally raised to different vertical positions of choice. Once the table surface (11) has been raised to its uppermost limit, the pawl (40) becomes locked in a non-tooth engaging position, thereby allowing the table surface (11) to be lowered to its lower most position. When so lowered, the pawl (40) is released from its non-engaging position, such that the pawl (40) again engages the teeth (35) to allow the table surface (11) to be incrementally raised as before.

Abstract: A carrier/insertion apparatus that has a U channel handle is improved to comprise an insertion portion, a stabilizer plate, and a deflector portion. The substrate that the carrier/insertion apparatus is mounted on comprises a carrier/insertion apparatus interface region that allows the carrier/insertion apparatus to mate thereto. As the carrier/insertion apparatus is slid into place, the deflector portion deflects the substrate a predetermined distance such that the carrier/insertion apparatus can be snapped into place. This arrangement allows for the carrier/insertion apparatus to be mounted on to a substrate without the use of mechanical hardware.