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Display: 20

    • Steam Calorimeter

    • Steam Calorimeter
    •  
    • This steam calorimeter, used for measuring the thermal conductivity of refractory materials, was developed at the National Bureau of Standards by Hobart C. Dickinson around 1946, and remained in use until 1961. Using this device, the rate of heat...
    • NIST Museum Artifacts
    • Steam Calorimeter

    • Steam Calorimeter
    •  
    • This steam calorimeter, used for measuring the thermal conductivity of refractory materials, was developed at the National Bureau of Standards by Hobart C. Dickinson around 1946, and remained in use until 1961. Using this device, the rate of heat...
    • NIST Museum Artifacts
    • Standard Volt Box

    • Standard Volt Box
    •  
    • This standard volt box (potential divider) was designed in 1926 by Francis B. Silsbee and constructed by Otto Wolff of Berlin. It was used as a working standard for the convenient testing of other volt boxes under working voltage with an accuracy...
    • NIST Museum Artifacts
    • 100-ohm British Association Type Resistor

    • 100-ohm British Association Type Resistor
    •  
    • This standard resistor was donated by Donald B. Brooks. It was found in the home laboratory of his father, Herbert B. Brooks, after his death in 1962. Herbert Brooks was a physicist at the National Bureau of Standards (NBS) from 1903-1939, and was...
    • NIST Museum Artifacts
    • Clinical Laboratory Thermometer SRM 934

    • Clinical Laboratory Thermometer SRM 934
    •  
    • This Standard Reference Material (SRM) is intended for use in clinical laboratories as a primary calibrant, particularly in the area of clinical enzymology. The National Institute of Standards and Technology (NIST) has provided Standard Reference...
    • NIST Museum Artifacts
    • Variable Resistance Transducer Spring

    • Variable Resistance Transducer Spring
    •  
    • This spring for a variable resistance transducer was sent to William A Wildhack, Chief of the National Bureau of Standards� Office of Basic Instrumentation, on January 15th, 1951, by B.A. Brice, Head of the Analytical and Physical-Chemical Division...
    • NIST Museum Artifacts
    • High Voltage Potentiometer

    • High Voltage Potentiometer
    •  
    • This specialized potentiometer was made by Leeds and Northrup around 1929 to meet design specifications of the National Bureau of Standards. It was intended primarily for use with a suppressed-zero electrodynamometer (see artifact 1998.0336.001)...
    • NIST Museum Artifacts
    • Eppley Potentiometer

    • Eppley Potentiometer
    •  
    • This specialized potentiometer was developed about 1925 by Dr. Marion Eppley for convenient use in the precise comparison of standard cells. As part of his generous cooperation with the National Bureau of Standards (NBS), he sold this early (Serial...
    • NIST Museum Artifacts
    • Nutting Colorimeter

    • Nutting Colorimeter
    • Colorimetry
    • This special type of spectroscope was designed by Perley G. Nutting in 1911 and constructed in the National Bureau of Standards shops, using certain optical elements purchased from the R. Fuess Optical Co. The instrument was later used by Deane B....
    • NIST Museum Artifacts
    • 50 Ampere Electrodynamometer

    • 50 Ampere Electrodynamometer
    •  
    • This special 50-ampere astatic electrodynamic wattmeter was designed, constructed, and tested over the course of two days in 1903 by Herbert B. Brooks for an urgent, important test. Herbert Brooks was a physicist at the National Bureau of...
    • NIST Museum Artifacts

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