Not Available Feature - 2-Instrument Mounting. This unit has a table size and a synchronizing up/down power column to load and support 2-instrument or appliance at a time. - Built-In Electric Outlet Socket and Table Hole This table unit has a electric power outlet socket for the mounting Refrac/Kerato-meter to get power from and a hole in the work-table for the electric cable go through. These convenience appliance improves the image of working space and prevent physical damage from tumbling over the cables in the floor. - Safety Bar Switch To prevent the patient from the physical damage from the collision of the knee with this table, the safety bar is installed under the table. The table instantly stops moving down when patient's fore-thigh touches this safety bar. Specification Table External Dimension 915(W)*660(D)*670(H) Table Size 915*480 Table Height Min.670 ~ Max.1315 Vertical Travel Height 38mm/sec Allowable Loading Weight of Table 140kg Input Power AC110 or 230V / 50 or 60Hz Power Consumption 240VA Product Weight 43kg