This is a Geophysical Item....April 2022






The Mystery Item is

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a Monroe Mechanical Calculator from the late 1950’s. It was used on seismic field crews as well as in the office.

It was donated by Gil berg.

We also have a slightly newer model from the 1960’s which is electric and was donated by Dick Conroy.

Both of these are part of the GSH Museum Collection.



#mysteryitem #SunOil #electromagneticdetector #geophysics #geophysical #GSHmuseumcollection #MonroeMechanicalCalculator








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