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Place California--South Pasadena Remove constraint Place: California--South Pasadena Place California--Pasadena Remove constraint Place: California--Pasadena Format Image Remove constraint Format: Image Date 1950 Remove constraint Date: <span class='single'>1950</span>

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    • 1950
    • 1940
    • 1934 – 1935
    • 1946
    • Undated
    • 1949

    A Pasadena garage was the first home of the National Postal Meter Company, founded by Arnold Beckman in 1934. The company soon became National Technical Laboratories, with a focus on pH meters. In 1935, the company…