Underpart of round pipe 32x2 mm, not movable. Basic: With transverse and longitudinal bracing and levelling feet. Possibilities for mobility see list of extras, page 32. Lying surface 3-sectioned: Head part upwards adjustable (+30°) by 2 metal rachets, safety and for longevity. Length of head part: 550 mm Middle part fixed. Length: 900 mm Foot part stepless from vertical downwards -90° till +25° upwards adjustable by gas spring. Length foot part: 500 mm