Humboldt State University
Robert A. Paselk Scientific Instrument Museum
Variable Air Condenser
Leeds & Northrup Co.
Humboldt College.; c.1950
Used for balancing out residual capacitances or neutralizing inductance in measuring circuits, such as bridge circuits, where dielectric loss must be held low.
The instrument is about 5.5 x 5.5 x 7 inchs high. It has a dial with 0100 divisions and two binding posts on a polished black bakelite top, mounted on a mahogany box. It is stamped NOM. MAX. VALUE .001 MF in the lower right corner on the top.
Described in Cenco Catalog J150 (1950) as
item 83515, pg 1322.
© R. Paselk