Online Book Subjects: Magnetic declination Displaying 1 - 3 of 3 A description of a new instrument denominated the celestial or variation compass Graydon, George s.n.] 1826 A description of a new instrument or celestial compass Graydon, George Printed by S. and R. Bentley 1825 The new attractiue Norman, Robert; Borough, William By E. Allde, for Hugh Astley 1596