Abstract: A control housing body (10) containing a cavity (12) of sufficient size to allow entry and movement by a human thumb, and capable of housing a number of controls (14, 16). Body (10) is inserted under a covering grip (33) that is connected in line with a surface grip (32) of a rotating steering device (31). Dial control (14) is provided to set a scalar variable such as vehicular speed at a constant number. A thumb rest (13) and a control guard (17) inhibit the thumb from slipping downwards and unintentionally activating a contracting control (16) that can be actuated by the contracting movement of a human thumb. A sliding cover (40) can be alternately positioned over cavity (12) or inside retraction slot (46). A pivoting pin (22) and pivoting rotator (24) allow the control housing body to rotate around the axis between two pivot holes (26) and (28).

Abstract: Abstract: A control housing body (10) containing a cavity (12) of sufficient size to allow entry and movement by a human thumb, and capable of housing a number of controls (14, 16). Body (10) is inserted under a covering grip (33) that is connected in line with a surface grip (32) of a rotating steering device (31). Dial control (14) is provided to set a scalar variable such as vehicular speed at a constant number. A thumb rest (13) and a control guard (17) inhibit the thumb from slipping downwards and unintentionally activating a contracting control (16) that can be actuated by the contracting movement of a human thumb. A sliding cover (40) can be alternately positioned over cavity (12) or inside retraction slot (46). A pivoting pin (22) and pivoting rotator (24) allow the control housing body to rotate around the axis between two pivot holes (26) and (28).