Astrolabju

astrolabe: an elaborate inclinometer, historically used by astronomers and navigators to measure the altitude above the horizon of a celestial body, day or night.

Source: Italian

PLural: Astrolabji

Klinometru

inclinometer or clinometer: an instrument used for measuring angles of slope (or tilt), elevation, or depression of an object with respect to gravity’s direction.

Source: Italian

Plural: klinometri

Kosmolabju

Cosmolabe: an ancient astronomical instrument resembling the astrolabe, formerly used for measuring the angles between heavenly bodies. It is also called pantacosm.

Source: Italian

Plural: Kosmolabji