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Vertical magnetic force variometer

Vertical magnetic force variometer

Askania

1930s (Est)

Method: Magnetics

Description

Operation of this variometer required first levelling the instrument on its tripod using two spirit levels. Instrument temperature was recorded from an internal mercury thermometer for the purpose of applying a compensation correction. The relative vertical magnetic force was measured off a graduated scale viewed through a microscope. Calibration scale and temperature compensation factors are not known for this instrument. Setup and measurement time for an experienced operator is estimated to be one minute.

Relative measure of Vertical Component. Resolution: 2 nT

Serial Number: 116,992

Year of manufacture: Estimated 1930’s

Origin: Askania Werke. Germany

Weight: 6 kg