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Instruments and Measurements: Chemical Analysis, Electric Quantities, Nucleonics and Process Control edited by von Koch and Ljungberg1 contained, in two volumes, the proceedings of the Fifth International Instruments and Measurements Conference held in Stockholm in 1960. It included papers on electric and magnetic quantities, precision electrical measurements and microwave apparatus and techniques...
A new instrument has been developed which displays simultaneously on two meters the difference in magnitude and phase angle between an unknown and a standard impedance. These impedances may be resistors, capacitors, inductors, or any complex impedance. No balancing operation is used, but instead the vector components of the bridge unbalance voltage are measured and displayed independently.
A discussion of recent developments in magnetic-drag-type aircraft tachometer equipment. Wartime demands for increased temperature range, instrument durability, and compactness have led to certain revisions and new design features. The results of these recent developments are outlined in this paper.
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