True meridian

“The position of the true meridian may be found as follows: Point the hour hand of a watch towards the sun; the line joining the pivot and the point midway between the hour hand and XIII on the dial will point towards the south; that is to say if the observer stands so as to face the sun and the XII on the dial, he will be looking south. To point the hour hand exactly at the sun, stick a pin and bring the hour hand into the shadow. At night a line drawn toward the north star from the observer’s position is approximately a true meridian.” — Moss, 1914

Downloads