Unifilar variation compass and magnetometer by Robinson
1830
Variometer reflecting head in fitted case
Inertia ring used by Capt. Collinson, 1850-53
1850-1853
Welsh's vertical force magnetograph by Adie, 1857
1857
Two inertia rings
Three inertia bars
Two inertia rings, circa 1853
1853
Small frame containing two kinds of spider's thread
Variation compass
Pair of 6-inch magnets and keepers, in mahogany box
Thirteen inertia bars
Compass with prismatic azimuth attachment
1801-1900
Apparatus to illustrate the phenomena of terrestrial magnetism
Two Fox dip needles in carriers and ivory rubber
1851-1900
Kew pattern unifilar magnetometer
1883
Kew pattern unifilar magnetometer, incomplete
Pair of collimator magnets in wooden carier
Azimuth compass in gimbals
Kew pattern unifilar magnetometer
Fox dip and intensity apparatus by George
circa 1840
Dip circle by Robinson, c 1830.
1830
Gunmetal scale
1883
Dip circle and magnetometer by Brunner
1884
Dip circle by Nairne and Blunt
1775
Dip needle
Porter's magnetic sundial
Dip circle by Robinson & Barrow, London, c.1840
1842-1845
Inertia bar for use with unifilar magnetometer
Inertia ring
Dip circle by Robinson, c. 1830
1830
Vertical magnetometer by Oertling, c. 1930
1930
Three photographic plates and one plate carrier
1850
Magnet bar
Pair of 12-inch magnets and keepers, in box
Sixteen inertia rings
Six inertia bars
Dip circle by Robinson, c.1830
1830
Dip-needle, demonstration model
Compass for deviation tests, circa 1850
1850
Two dip needles used by Sir J.C. Ross, c.1840
1840
Pair of collimator magnets, ex Kew Observatory
Cabinet of magnetic apparatus
1801-1850
Variation Compass and magnetometer, 1837-1843
1837-1843
Magnetic model showing changes at Philadephia
Variation compass, for observations of the Aurora, 19th century
1801-1900
Kelvin's Vertical Force Magnetometer, by James White, 1870-1900
1870-1900
Register of magnetic disturbance at Toronto 30th Nov. 1849 and description of magnetometers
Dip circle with boxed needles, used by Sir J.C. Ross
1839
Photographic bifilar magnetometer
1883
Photographic dip magnetometer forming part of Mascart's apparatus
1883