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Photoenlargement of two records of microseisms

Clockwork mechanism for Shaw type seismograph, British, 1930-1935

1930-1935

Clockwork mechanism for Shaw type seismograph, British, 1930-1935

1930-1935

Clockwork mechanism for Shaw type seismograph, British, 1930-1935

1930-1935

Clockwork mechanism for Shaw type seismograph, British, 1930-1935

1930-1935
Milne-Shaw seismograph no.1, designed and constructed by John Johnson Shaw, 1914, based on an original design by John Milne. The instrument, which has a horizontal pendulum and electromagnetic damping, was tested at Bidston Observatory, near Liverpool, and in 1918 was transferred to the University Observatory at Oxford.

Milne-Shaw seismograph no.1

1914
Base with modern electrical driving motor for Shaw horizontal pendulum seismograph, 1930-1935

Electrical drive motor for Shaw type seismograph, British, 1930-1935

1930-1935
Part of Shaw horizontal pendulum seismograph. Including small box, cardboard box of small parts, wooden base and clockwork part, 1930-1935

Part of Shaw type seismograph, British, 1930-1935

1930-1935
Clock impulse generator with clock dial showing Greenwich Mean Time in wooden box for Shaw horizontal pendulum seismograph, 1930-1935

Clockwork mechanism for Shaw type seismograph, British, 1930-1935

1930-1935
Oil bath damper from detector mechanism for Shaw horizontal pendulum seismograph, 1930-1935

Clockwork mechanism for Shaw type seismograph, British, 1930-1935

1930-1935
Part of sensor mechanism for Shaw horizontal pendulum seismograph, 1930-1935

Clockwork mechanism for Shaw type seismograph, British, 1930-1935

1930-1935
Solenoid on stand with recording arm and pen with ink well, for Shaw horizontal pendulum seismograph, 1930-1935

Clockwork mechanism for Shaw type seismograph, British, 1930-1935

1930-1935
Horizontal pendulum arm for Shaw horizontal pendulum seismograph, 1930-1935

Clockwork mechanism for Shaw type seismograph, British, 1930-1935

1930-1935
Milne-Shaw seismograph no. 33, made by John Johnson Shaw, West Bromwich, UK, and owned by the Safety in Mines Research Board, c. 1925

Milne-Shaw seismograph no. 33, c. 1925

circa 1925
Milne-Shaw seismograph, no.45, possibly 1930, see technical file

Milne-Shaw seismograph

Box for Shaw horizontal pendulum seismograph, 1930-1935.

Box for Shaw type seismograph, British, 1930-1935

1930-1935
Brass roller for Shaw horizontal pendulum seismograph, 1930-1935

Clockwork mechanism for Shaw type seismograph, British, 1930-1935

1930-1935
Pivot piece bracket and small double bracket for Shaw horizontal pendulum seismograph, 1930-1935

Clockwork mechanism for Shaw type seismograph, British, 1930-1935

1930-1935
Mahogany shelf for Shaw horizontal pendulum seismograph, 1930-1935

Clockwork mechanism for Shaw type seismograph, British, 1930-1935

1930-1935
Recording drum for Shaw horizontal pendulum seismograph, 1930-1935

Part of Shaw type seismograph, British, 1930-1935

1930-1935
Ten weights and hanger for Shaw horizontal pendulum seismograph, 1930-1935

Clockwork mechanism for Shaw type seismograph, British, 1930-1935

1930-1935