Uttmark's guide to the United States local inspectors examination for masters and mates of ocean going steam and sailing ships (1919)
Uttmark, Fritz E · [New York] The Author · leaf 51
s instrument, andbearings of objects on land as well as amplitudes andazimuths of the heavenly bodies are measured. 23 UTTMARKS GUIDE 67.—*What is Variation of the Compass? Variation of the Compass is the angular differ-ence between the magneticmeridian and the true merid-ian. It differs in amount… … Fig. 42. the needle points to the righthand side of the true merid-ian. Fig. 42 indicates West Var-iation. Fig. 43 indicates East Var-iation.
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