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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:

  1. Sir Percy Spencer
  2. Dr Raymond Lemieux
  3. Sir Hermann Anschutz-Kaempfe
  4. Sir Peter Williamson
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8th Class Science Test Questions

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