Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement

Indicating or recording presence or absence of movement; Indicating or recording of direction of movement > Indicating direction only, e.g. by weather vane > Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement

Indicating or recording presence, absence, or direction, of movement (electric switches H01H; counting moving objects G06M7/00) > Indicating direction only, e.g. by weather vane > Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement