TY - BOOK AU - McComb,H.E. TI - Magnetic observatory manual T2 - Special publication (U.S. Coast and Geodetic Survey) U1 - 538.7/M12 PY - 1952/// CY - Washington PB - Government Printing Office, KW - GEOMAGNETISMO KW - CAMPO MAGNÉTICO KW - OBSERVATORIO GEOFÍSICO N1 - Incluye índice temático; Incluye bibliografía; 1. The forces between bar magnets -- 2. The Earth's magnetic field -- 3. The magnetic observatory -- 4. Instrumental constants and corrections -- 5. Optical systems and photographic registration -- 6. Quartz-fiber techniques -- 7. The declination variometer -- 8. The horizontal-intensity variometer -- 9. The vertical-intensity variometer -- 10. Temperature coefficients of variometers -- 11. Determination of scale values -- 12. Orientation of variometer recording magnets -- 13. Directions for installing a magnetograph -- 14. Processing of data at the observatory ER -