Perhaps even the compass measurement that matters, it is an objective measurement of existing values and their variations can be explained entirely objectively. A better course would be an inclination compass, even better would be a magnetometer.
Marahil kahit ang compass pagsukat Na mahalaga, ito ay isang Layunin na sukatan ng mga umiiral na halaga at ang kanilang mga pagkakaiba-iba ay maaaring talaga ganap Ipinaliwanag. Isang mas mahusay na kurso Gusto Maging isang pagkahilig compass, Gusto mas mahusay at magnetometer.