Navigator's Tool Uses Position of Celestial Bodies

This page is the CodyCross answer for the clue below from Past and Present Tech, Group 1443, Puzzle 3 (Light Bulbs).

Question is: Navigator's Tool Uses Position of Celestial Bodies

and the answer is: ASTROLABE

Word Meaning:

ASTROLABE — An astronomical and navigational instrument for gauging the altitude of the Sun and stars.

Definitions from Wiktionary.

Navigator's Tool Uses Position Of Celestial Bodies - Past and Present Tech CodyCross Answers | CodyCross Solutions