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Place of origin
Date

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

Three inertia bars

Variation compass

Two inertia rings, circa 1853

1853

Azimuth compass in gimbals

Dip circle by Robinson, c 1830.

1830

Gunmetal scale

1883

Dip circle and magnetometer by Brunner

1884

Dip circle by Robinson, c.1830

1830

Dip circle by Nairne and Blunt

1775

Dip needle

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

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

Three photographic plates and one plate carrier

1850

Variation Compass and magnetometer, 1837-1843

1837-1843

Variation compass, for observations of the Aurora, 19th century

1801-1900

Variation compass by Adams, c.1750

Variation compass by Adams, c.1750

1750

Register of magnetic disturbance at Toronto 30th Nov. 1849 and description of magnetometers. (Originally in frame but this no longer seems to exist).

Register of magnetic disturbance at Toronto 30th Nov. 1849 and description of magnetometers

Dip circle by Robinson, c.1839, used by Sir J.C. Ross

Dip circle with boxed needles, used by Sir J.C. Ross

1839

Photographic bifilar magnetometer, forming part of Mascart's apparatus, 1883, by Carpentier. With box of parts.

Photographic bifilar magnetometer

1883