| Show chronometer PUT TO TEST it Is kept on ice to secure Ac curite adjustment ettal yea be time the united states navy are s ib jested to a test to determine their ao and to correct any irregulars ties this operation commences in january and usually lasts until the middle of june and during that time hase delicate timepieces are kept on ico at the united states naval observe aliory it Is not or any fear that they will spoil that they are subject ed to this frigid experience but it la for the purpose of accurate adjustment that they should all be maintained in a constant temperature the necessity 0 having a ship clocks all absolutely alike will be real led by the layman when he Is re minded that an error ot tour seconds in the chronometer means an error a mile in calculating the vessel lo 10 alon the temperature varies at dit terent times of the test from to 90 degrees and the losing or gaining qualities of the chronometers under baese conditions are accurately kept thus with a chart expressing in curves just what he may expect from 1 is chronometer under different conditions of climate and with bis ther dometer and barometer close at hand a sailing master may calculate to a nicety the correct time and get hia location to a certainty |