Inventions MCQs – Certification Test 676

Gyrocompass Quiz (Question 676) – App & e-Book Download

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MCQ 676: A usable gyro compass was invented by:

Sir Percy Spencer
Dr Raymond Lemieux
Sir Hermann Anschutz-Kaempfe
Sir Peter Williamson

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Free Gyrocompass Textbook App – Download from Play & App Store

The App: Gyrocompass Quiz App to learn Gyrocompass Notes, General Knowledge Quiz App, and Sociology Quiz App. The "Gyrocompass Quiz" App Download – Free General Knowledge App (iOS & Android) for virtual elementary school. Download App Store & Play Store Learning Apps with all functionalities for online schools.