61 with respect to the lower table support 60 a support sleeve 62 positioned at one end of the lower table support 60 circumscribes the main mast 56 and is capable of being moved up and down the length of the main mast 56 the support sleeve 62 is positionally maintained by a sleeve bolt 64 passing through the main mast 56 however pins and telescopic means can be substituted for the sleeve bolt 64 to maintain the relative height or position of the lower table support 60 further the upper table support 58 is fashioned with a support shaft 66 at the end which is to connect the upper table support 58 to the main mast 56 the tables are attached to rotate independently around the main mast 56 positioned in the main mast swivel socket 32 the main boom 38 may vary in length wall thickness type of material shapes and sizes depending on the application the upper table 36 is limited in motion in the vertical direction as it is mounted at the top of the main mast 56 the lower table 36 has a special purpose which is to serve as a structure which allows an individual such as a c5 6 quadriplegic the ability to sit themselves up on to his her elbows by reaching under the table and utilizing his.