William Thomson's Tide Predicting Machine, 1872
1872
Section of lightning conductor from St Paul’s cathedral
1769
Potentiometer, for spontaneous polarisation measurements
1931
Non-polarizing electrode, for spontaneous polarisation measurements
1931
Geophone, sectioned, c.1955
1955
Scrase altielectrograph, 1937
1937
Replica of Lightning Conductor by Benjamin Franklin, United States, 1730-1760
1730-1760 (original); 1931-1939 (replica)
Original Lodge lightning protector
Solid State Seismometer
Strong motion seismograph
1971-1980
Rubidium-Vapour Magnetometer Sensor, 1968-1972
1968-1972
Model of Henry Cavendish's Torsion Balance Gravitational Apparatus, 1798
1798 (original); 1977 (model)
Resistivity meter by Martin-Clark, Oxford, 1977
1977
Photoenlargement of Tasmanian earthquake
Record of Gravity Determinations Made By a Dutch Submarine
1923
Photoenlargement of seismogram of earthquake
Megger type earth resistance tester, 1929-1932
1929-1932
Sectioned half-scale model of Eötvös torsion balance
1928
Mintrop field seismograph, recording apparatus and box, for geophysical prospecting
1921
Annotated photoenlargement of Yokohama earthquake
Clockwork mechanism for Shaw type seismograph, British, 1930-1935
1930-1935
TI 407 power control unit by Techno Instruments
1964-1967
Dip plotter arm
1948-1950
Peltier Type Electrometer, 1848
1845
Kelvin's second tide predictor, 1873.
1873
Radiobeacon by Aquatronics
MP 8 swamp and marine geophone, 21x5 diam cm
Seismochronograph designed by Arnold von Lasaulx, c. 1876
1876
Model for a vane to submerge towed hydrophone streamer
1965
TI 551A Single-drum recorder - reproducer by Techno Instruments
1956-1966
CDA camera-recorder by Seismograph Service
1960-1965
Gravity pendulum by Bailey, R.A.S. No.2
1834
PROBE UNIT MO 30 sea water sound velocity meter
GAA reflection geophone
1950
Three brass screws from the Gravity pendulum by Bailey
1834
Wooden bracket from the Gravity pendulum by Bailey
1834
Hedges and Lowrie-Hall vacuum earthing device
Clockwork mechanism for Shaw type seismograph, British, 1930-1935
1930-1935
BAZ shot blaster by Seismograph Service
1958
BC 3 shot blaster by Electro-Tech
1960
Varley's Lightning Protector, 1861
1861
Air terminal with grooved lead joint attachment for horizontal lightning conductor
1905
Tide gauge recording unit
Photoenlargement of two records of microseisms
Three electric alarm bells
Tellohm resistivity meter by Nash and Thompson Ltd.
1960
Portable refraction seismograph by Geospace
1960
Samples of wire struck by lightning
2-shot firing system MkI by STS
1975-1980
