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• 17:48, 16 April 2024 Peter talk contribs created page Unit instruments (Created page with "From Arthur E. Thiessen, ''[https://www.cs.cmu.edu/afs/cs/Web/People/ram/electro/gr/history.pdf A History of the General Radio Company (1965)]'': <blockquote> Later [in 1948], recognizing the need for simple, wide-range, basic, laboratory instruments, particularly, for instance, in schools and colleges, GR introduced the so-called Unit line, a concept of Eastham, developed by Karplus. Precision laboratory instruments are rather...")