This fixed inductor was made by Hartmann & Braun of Frankfurt am Main, Germany, and is in the collection of the physics department at the University of Texas in Austin. 

  This Brooks Inductometer cost Wilmington College $150 when it was bought from Leeds and Northrup of Philadelphia in 1920-21,

   The device could be used as either a self or mutal inductance. For a fuller description of a similar piece of apparatus at Kenyon College, click here.

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