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Genre Scientific apparatus and instruments Remove constraint Genre: Scientific apparatus and instruments

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    • 1940s

    Electric-powered meter with instructions housed in wooden box. Movable components within box: two (2) slide glass filters (1 with red, green, and blue slides; 1 with orange, green, and blue slides); one (1) encasing to…

  1. A: Bulb containing mercury attached to a glass tube of narrow diameter. Thermometer has Celsius scale with 20-30 degree range with major divisions every 1 degree and minor divisions every 0.1 degree.

    B: Protective…

  2. A: Bulb containing mercury attached to a glass tube of narrow diameter. Thermometer has Celsius scale with 0-100 degree range.

    B: Protective cardboard tube for the thermometer (not digitized).

    Partial immersion…

    • circa 1964 – 1968

    Used to create silicon ingots for use in the semiconductor industry, this crystal puller consists of two main parts, the furnace and the puller: the furnace is cylindrical and located at the bottom of the instrument, it…

  3. Distillation is a method of separating chemical substances based on differences in their volatilities in a boiling liquid mixture. A distilled beverage is a liquid meant for consumption containing ethyl alcohol…

    • circa 1924

    A spectrograph is an instrument used to obtain and record a light spectrum—it splits the light from an object into its component wavelengths so that it can be analysed. The spectral lines of a chemical element is…

  4. Self contained pH meter with wooden exterior; hinged lid opens to reveal meter face and inlaid paper instructions for use; the dial is calibrated from pH 0 to pH 13 in .1 pH divisions; porcelain enamel lined electrode…

    • 1880 – 1890

    Black metal (iron) U-shaped base with cylindrical brass (plated) parts; two metal slide clips mounted to slide plate; rotatable eye piece lowered or raised by the adjustment of top right knob; circular mirror underneath…

    • circa 1890

    Small brass microscope likely dating from the last quarter of the 19th century; no maker's name or other identifying marks; rests on a circular stand; body of scope connected to base stand by a hinge that allows the…

    • 1900 – 1925

    A spectrograph is an instrument used to obtain and record a light spectrum—it splits the light from an object into its component wavelengths so that it can be analysed. The spectral lines of a chemical element is…

  5. Black finished cylindrical casing with three copper electrodes in a line next to product inscription; nickel knob is raised above the cylinder; outer dial goes from 0-15 (but only three digits are visible through its…

  6. Spectroscope is in the style of the original Bunsen-Kirchhoff design. Triangular glass prism sits on a round, brass dias and is held in place by a metal arm attached to the dias; prism is coated in black paint with only…

    • 1919 – 1926

    A: Refractometer
    Instrument has round cast iron base; on the base is a rectangular glass mirror mounted to allow rotation; a single black pillar supports the prism alidade, the black cylindrical telescope viewer, and…

    • circa 1946

    A: Microscope
    Ernst Leitz oil-immersion microscope; instrument rests on wishbone-shaped base with a single beam extending from the center before splitting into two sections: an arm supporting the telescope and…

    • 1940s

    A: Cast iron base attached to a sloping cast iron upright supporting the reader, prisms, sample cups, plungers, and a mechanism for raising and lowering the sample cups; two metal knobs control the height of the sample…

    • circa 1937 – 1941

    A: Refractometer
    Instrument has round base with black finish; on the base is a double-sided circular glass mirror mounted to allow full rotation; a black pillar supports the prism alidade, the black brass cylindrical…

  7. A: Duboscq type colorimeter, biological, with electric illuminator. Hollow black cast iron base attached to a sloping cast iron upright supporting the reader, prisms, and sample cups; reader detaches with two metal…

  8. Wooden box with metal instrument inside; instructions attached to top of box; instrument has a gauge and three turnable knobs; space along side has a power source and an electrode that is used for measuring; plaque on…

  9. Cast iron base attached to a sloping cast iron upright supporting the reader, prisms, sample cups, and a mechanism for raising and lowering the sample cups on a focusing rail; metal knobs on each side control the height…

    • 1950s

    Potentiometers are used to measure electromotive force (emf) by balancing it with a known emf. The concept was first developed in 1841 by J. C. Poggendorff and improved throughout the 19th century by Latimer Clark and…

  10. Wooden apparatus for holding ten test tubes upright.

    • 1950

    Self contained pH meter with wooden exterior; hinged top door opens to reveal meter face and inlaid paper instructions for use; the dial is calibrated from pH 0 to pH 13 in .1 pH divisions; porcelain enamel lined…

  11. Wooden box with handle at top and metal latch closure at front; interior: instructions for use printed on paper and inset into box lid; top face: window at center reveals pH scale "7-14" and millivolts "0-400"; control…

    • 1938

    Self contained pH meter with wooden exterior; hinged top door opens to reveal meter face and inlaid paper instructions for use; the double scale reads pH and millivolts; hinged door on left side of wooden case opens to…