Congratulatios for your great effot sir. May I point out one thing. While adjusting the height of the magnet turn the knob so that magnet is aligned along N-S direction .If you observe the oscillation in earth's field there is an asymmetry.

It's really helpful 💓

Thank you sir

Nice explanation

Sir, Tangent galvanometer - ammeter calibration inte video cheyamoo.

Thank u sir

Thank u so much sir appreciate your great effort

Thank you sir