Med-Fit Systems 2009 The Nautilus Nitro® Plus Gravitron stands alone as the only Chin/Dip machine to provide a proper biomechanical movement pattern.     * Four-bar linkage controls path of motion for proper biomechanics     * Kneeling design reduces height and enhances comfort     * Chin bar easily tilts out of the way when user performs dips     * Knee pad can be locked down for unassisted chin-ups, pull-ups and dips     * UPDATE: The countoured seat has been upgraded with a higher density foam to       improve the comfort and durability of the pad. The countours of the seat in the photo       above  may be different than the updated model. Nautilus Nitro® Plus Gravitron Chin-Dip Length    65" (165 cm)  Width 46" (117 cm) Height 84" (213 cm) Machine Weight 587 lbs (267 kg) Weight Stack 230 lbs (100 kg) Core Upper Body Lower Body 1.800.831.7665 1.800.831.7665