Horizontal geophone

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Vertical geophone

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24-bit seismograph / combined / 12-channel

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Exploration seismograph / 12-24 channel / data acquisition / 24-bit

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Exploration seismograph / USB / data acquisition / 24-bit

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Earth resistivity measuring device / portable

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AC electrical resistance tomography (ERT) device

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Electronic level indicator / water / direct-reading / flat ribbon

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Electronic level indicator / water / direct-reading / for water table

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Electronic level indicator / water / digital / with temperature indicator

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