What  ELMER A. SPERRY invented?

Options: Hydroplane,    Hydraulic turbine,    Magnetic compass,    Gyrocompass

Click To See Answer

Previoius     |    Next

66% Users Answered this question correctly.
Did you know that you can earn money from this site by beating scores of other aspirants in "General Knowledge" Category?

Click Here to take quick 5 mins MCQ test to find out your true potential.

Those who attempted this question also tried following: