Photographs from the biaixal tiltmeter near Olympia at the Shelton airport.

Corner vault with
mounts and end caps for both tiltmeter arms.
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Mounting electronics & float reservoirs.
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Working tiltmeter with voltage meter.
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Close up view of solar panels.
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Driving steel monument piles 30ft deep with pneumatic hammer.
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Looking across the east-west arm of a 500 meter tiltmeter.
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Radio telemetry links to computer. Data saved every five mins, for each of the six recording instruments
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Complete corner vault with solar and telemetry packages, Note yellow
building in upper left corner where the data is archived.
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Each manhole is
capped with a rebar
reinforced concrete cap.
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Surface view of vault entry.
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