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Subject Rulers (Instruments) Remove constraint Subject: Rulers (Instruments)

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    • 1964-Jul

    This photograph is part of a series of marketing images used to demonstrate the small size of Helipot products, in this case a microcircuit.

    • 1964-Jul

    A ruler provides a sense of scale for the microcircuit.

    • 1950 – 1969

    This photograph is part of a series of marketing images used to demonstrate the small size of Helipot products.

    • 1950 – 1969

    This photograph is part of a series of marketing images used to demonstrate the small size of Helipot products.

    • 1964

    This oxygen monitoring equipment was made by Beckman Instruments' Space Engineering Group (SEG) for NASA's Biosatellite Program under a subcontract to Hamilton Standard Division of United Aircraft Corporation. This…