Enter a clue or pattern or both:
The Clue
Sextant's predecessor (9 letter answer)
The Answer
ASTROLABE
Tags
Notes
The answer ASTROLABE is so rare that it appears less than once every 2900 puzzles.
Related Clues
Sextant's forerunner
Old navigation instrument
Old navigational instrument
Definition
ASTROLABE as a noun:
1. an early form of sextant