similarly configured to enable close cooperation with finger 120 spring 124 is a compression spring biases finger 120 into an engaged position fig3 occupying one recess 122 rotation of pivot wheel 112 brings other recesses 122 into alignment with finger 120 rotation of pivot wheel 112 and selection of different recesses 122 alters an angle between longitudinal axis 126 of heatable wand 102 see fig5 and elongated handle 104 pivot wheel 112 may be rotated by hand while simultaneously holding actuator 116 out of the engaged position shown in fig3 illustratively actuator 116 is moved to the right as illustrated in fig3 in curling iron 100 pivot wheel 112 is exposed to finger contact on one side of elongated handle 104 and the manual detent comprises finger contact surface 118 on another side of elongated handle 104 pressure against finger contact surface 118 of the manual detent withdraws the protuberance finger 120 from that one of recesses 122 occupied by the protuberance the above configuration enables a user with one hand encircling elongated handle 104 to maintain actuator 116 in a disengaged position with the thumb for example while manipulating pivot wheel 112 to a new position with the index finger for example circumferential.