As nouns the difference between gastroscope and astroscope
is that gastroscope is a form of endoscope used to view the inside of the stomach while astroscope is an old astronomical instrument formed of two cones, on whose surface the constellations were delineated.
gastroscope
English
Noun
(
en noun)
a form of endoscope used to view the inside of the stomach
astroscope
English
Noun
(
en noun)
An old astronomical instrument formed of two cones, on whose surface the constellations were delineated.
(
Webster 1913)