36 CFR Part 1195 Standards for Accessible Medical Diagnostic Equipment

M305.2.1 Location.

Transfer supports shall comply with M305.2.1.1 or M305.2.1.2 and shall be located 1 ½ inches (38 mm) maximum measured horizontally from the plane defined by the nearest edge of the transfer surface. 

EXCEPTION: Where the support folds, collapses, or articulates, the transfer support shall be permitted to be located 3 inches (75 mm) maximum from the plane defined by the nearest edge of the transfer surface.

M305.2.1.1 End Transfer Supports.

Transfer supports for transfer surfaces complying with M301.2.3.1 and M302.2 shall be located on the short side (length) opposite the transfer side.

M305.2.1.2 Side Transfer Supports.

Transfer supports for transfer surfaces complying with M301.2.3.2 shall be capable of supporting transfer on each side of the transfer surface.