Remanent Specimen Magnetometer

Geophysics Collection · Physics

Accession Number: 2019.ph.828

Description:

A case with a leather-like finish houses a metal instrument. The case has a shoulder strap and a buckle closure.

The instrument’s console faces upwards towards the lid. The console has a battery gauge, a power switch, and a large circular dial, a silver power switch, and other features.

The large dial is actually a removable element that is attached to a white plastic sample holder. The dial is used to rotate the sample within a chamber in the instrument.

Alternative Name:

Remanent Specimen Magnetometer Model PSM-1

Primary Materials: Metal, plastic.

Markings:

The word “Remanent” is written above the has been written above the printed text “SPECIMEN MAGNETOMETER” on the console of the instrument.

The words “TURN OFF AFTER USE” and “UP=ON” is written adjacent to the switch labelled “POWER”

The words “Lab environment is too noisy to use these scales” is written beside the top-most two settings of the switch labelled “EMU// FULL SCALE”

The word “NORTH” has been written above the upper quadrant of the sample chamber.

The number “12203” has been stamped in ink at the upper periphery of the sample chamber.

Dimensions (cm): Height = 22.5, Width = 15, Length = 27.

Function:

This instrument measures the remanent magnetization of a magnetic mineral sample. This can provide information about the history of the earth’s magnetic field, and the geological history of a sample.

Condition:

Very Good: There is some corrosion around the base of the switch labelled “EMU FULL SCALE”.

Manufacturer:

Schonstedt Instrument Company, Reston, Virginia.

Date of Manufacture: c. 1970s-1980s

Provenance:

This artifact was gathered from room 0007A in the McLennan building on March 21st, 2019.

It was used as part of the teaching lab run by the applied geophysics group at the University of Toronto Department of Physics.

Additional Information and References:

This model of instrument is mentioned in the following University of Toronto-related article.

Geissman, John Wm., David W. Strangway, Ann M. Tasillo-Hirt, and Larry S. Jensen. “Paleomagnetism of Late Archean metavolcanics and metasediments, Abitibi orogen, Canada: tholeiites of the Kinojevis Group.” Canadian Journal of Earth Sciences, 1983, 20:436-461