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Seismograph
Equipment
Photos




Inyo Force Balance Vertical Seismometer
see Photos below
Parts Ready for Assembly
Assembled Instrument
 Pressure Case
 Installation on Seismic Pad


Shackleford-Gundersen (SG) Horizontal Seismometer

Front View
SG Front View

Rear View
SG Rear View

Displacement Sensor Close-up
SG Sensor

Seismometer With Insulation Wrap
SG with Insulation

Seismometer with Cover Installed
SG with Cover
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Inyo Force Balance Broadband Vertical (FBV) Seismometer

 Inyo FBV Seismometer
parts ready for assembly
FBV Parts Layout


 The major components of the Inyo Force Balance Broadband Vertical seismometer,
 minus the main suspension spring, the trim balance weights, and the electrical wiring among the
components, have been assembled in a "dry fit" assembly to make sure everything lines up correctly.
FBV Dry Fit 1

FBV Test Assembly 2
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 Hermetically-Sealed Pressure Case (Front View)
for Inyo FBV Seismometer
Inyo Case Front View
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Hermetically-Sealed Pressure Case (Front View)
for Inyo FBV Seismometer
Inyo Case Rear View
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 Inyo FBV Seismometer installed with Pressure Case
on New Concrete Seismic Pad, Top View
Inyo In Pressure Case, Top View
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Inyo FBV Seismometer installed with Pressure Case
on New Concrete Seismic Pad, Front View
Inyo In Pressure Case, Front View Installed
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Inyo FBV Seismometer installed with Pressure Case
on New Concrete Seismic Pad, Front View
Inyo in Pressure Case, Rear View Installed
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 Inyo FBV inside new Thermal Cover, front view, housing instrument and pressure case
on concrete seismic pad, with SG horizontal sensor on left
FBV Thermal Cover and SG
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