Search -
A New And Easy Method Of Finding The Time At Sea, And For Ascertaining The Variation Of The Compass (1865)
A New And Easy Method Of Finding The Time At Sea And For Ascertaining The Variation Of The Compass - 1865 Author:James Hay All Requiring No Calculation Except A Little Addition Or Subtraction, And Independent Of Knowing Either Latitude Or Longitude Within Two Degrees.