Practical Guide for Compensation of Compasses Without Bearings
Practical Guide for Compensation of Compasses Without Bearings
Alfred Joseph Collet
The book Practical Guide for Compensation of Compasses Without Bearings was written by author Alfred Joseph Collet Here you can read free online of Practical Guide for Compensation of Compasses Without Bearings book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Practical Guide for Compensation of Compasses Without Bearings a good or bad book?
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In Uncertainties practice it is a little more complicated, but this complication cations in * cannot cause the method to be set aside, because the whole P racfclce - time required for the complete compensation of the compass does not exceed forty minutes, with an experienced observer, and an hour at most for one less acquainted with the work. The various causes of the uncertainties are. First, we have said that it is necessary to observe on the exact magnetic points, and it must be borne in min...d that when compensating the compass without bearings, there is nothing but the compass to indicate the proper direction. It is therefore with the ship's head by compass, that the observations are made, but thedeviations being different at each point, when the ship's head is put on opposite points by the compass, the two positions are not actually opposite to one another as they should be, for the rigorous application of the method, and as we have supposed them to be in the elemen- tary explanation which we have just given.
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