Small frame containing two kinds of spider's thread
Pair of 6-inch magnets and keepers, in mahogany box
Kew pattern unifilar magnetometer
1883
Apparatus to illustrate the phenomena of terrestrial magnetism
Kew pattern unifilar magnetometer, incomplete
Kew pattern unifilar magnetometer
Pair of collimator magnets in wooden carier
Two Fox dip needles in carriers and ivory rubber
1851-1900
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
Fox dip and intensity apparatus by George
circa 1840
Two inertia rings
Thirteen inertia bars
Compass with prismatic azimuth attachment
1801-1900
Dip circle by Robinson, c 1830.
1830
Three inertia bars
Variation compass
Two inertia rings, circa 1853
1853
Gunmetal scale
1883
Variation Compass and magnetometer, 1837-1843
1837-1843
Dip circle and magnetometer by Brunner
1884
Dip circle by Robinson, c.1830
1830
Dip circle by Nairne and Blunt
1775
Dip needle
Three photographic plates and one plate carrier
1850
Magnetic model showing changes at Philadephia
Dip-needle, demonstration model
Magnet bar
Pair of 12-inch magnets and keepers, in box
Porter's magnetic sundial
Pair of collimator magnets, ex Kew Observatory
Cabinet of magnetic apparatus
1801-1850
Dip circle by Robinson & Barrow, London, c.1840
1842-1845
Inertia bar for use with unifilar magnetometer
Variation compass, for observations of the Aurora, 19th century
1801-1900
Two dip needles used by Sir J.C. Ross, c.1840
1840
Inertia ring
Compass for deviation tests, circa 1850
1850
Dip circle by Robinson, c. 1830
1830
Kelvin's Vertical Force Magnetometer, by James White, 1870-1900
1870-1900
Vertical magnetometer by Oertling, c. 1930
1930
Sixteen inertia rings
Six inertia bars
Variation compass by Adams, c.1750
1750
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