inclinometer

/IH0 N K L AH0 N AA1 M AH0 T ER0/
noun
  1. 1

    An instrument that displays the angle of an aircraft relative to the horizon.

  2. 2

    An instrument that measures magnetic dip; a dip circle.

  3. 3

    A surveying instrument that measures angles of inclination or elevation; a clinometer.

Synonyms

Source: https://en.wiktionary.org/wiki/inclinometer