synchroscope

English

Etymology

From synchro- +‎ -scope, from syn- +‎ chrono- +‎ -scope, from Ancient Greek σύν (sún)+χρόνος (khrónos)+σκοπέω (skopéō).

Noun

synchroscope (plural synchroscopes)

1. An instrument that indicates the degree to which two alternating current systems are synchronised with each other; used especially in electricity generation.
2. An instrument used to synchronise the propellers of a twin-engine aircraft.