| Show COMPASS OLD AND NEW the apy i biking a good one at very the motion of a small craft in rough water causes the common compass card to jump about so much as to be perfectly useless to steer by while a fluid compass remains steady and reliable under all circumstance sand conditions there are several fluid compasses in the market at a reasonable price which can be depended in upon an emergency the fluid on which the needle floats L generally alcohol to guard against freezing and is simply a of a primitive compass used y alie daring seamen of the twelfth centar the 7 d instrument says i writer in outing consisted of an aror needle one end of which was stuck int a piece of cork the other end a well rubbed with a loadstone load stone and when the cork floated in an earthenware bowl of water the end so treated pointed to the magnetic north in spite of the meager knowledge of those early naviel acors concerning variation and deviation they generally managed to make a sufficiently good landfall land fall it may not be know n that a noodle rubbed on a magnet and carefully propped into a vessel of water will float and point to the north |
