Mystery Item

This is a geophysical item..... Do you know what it is?

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Light Box used with a torsion balance in the 1920’s to help with the gravity readings.  It was built and donated by Humble Oil.

Mystery Item

September 2022

Light Box used with a torsion balance in the 1920’s to help with the gravity readings.  It was built and donated by Humble Oil.

Light Box used with a torsion balance in the 1920’s to help with the gravity readings.  It was built and donated by Humble Oil.