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Subject Measuring instruments Remove constraint Subject: Measuring instruments

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    • after 1940

    Clear glass measuring cup used to measure the volume of liquid. Cup has red measurement indicators (printed directly on the glass) for ounces and cups, a spout, and a closed handle. The trademarked "PYREX" logo is…

    • 1791

    This mezzotint print portrait of Jesse Ramsden was produced by printmaker John Jones after a painting by Robert Home at the Royal Society. Ramsden (1735–1800) was an English mathematician, and an astronomical and…

  1. Rectangular wooden box; brown leather handle attached to top with metal fasteners; front has a steel lock screwed to it; lock is stamped with manufacturer; four hard black rubber feet on bottom; top attached with two…

    • after 1888

    Direct current voltmeter, Model 1. Instrument mounted on brown felt on a hardwood base, with a brass tag in front; instrument made of metal and finished in orange-brown; two electrical connections covered in black…

    • Part of Instruments of Precision Laboratory Apparatus, M-L Catalog
    • 1911

    "The instrument is designed after suggestions from Prof. D. B. Brace, for whom a number of these instruments were built."

    • Part of Instruments of Precision Laboratory Apparatus, M-L Catalog
    • 1911

    "For studying the reflection, refraction, absorption and polarization of radiant heat."

    • Part of Instruments of Precision Laboratory Apparatus, M-L Catalog
    • 1911

    Top figure is a laboratory spectrometer with a polarizing attachment. Lower figure is a spectrometer with a third arm and camera attachment.

    • Part of Instruments of Precision Laboratory Apparatus, M-L Catalog
    • 1911

    "This spectroscope will show the first order of spectrum all at once across the field of the eyepiece."

    • Part of Instruments of Precision Laboratory Apparatus, M-L Catalog
    • 1911

    Top figure is a Foucault heliostat, which reflects the rays of the sun in a horizontal direction. Bottom figure is a two-mirror heliostat, where the second mirror allows the path of the light beam to be thrown in any…

    • Part of Instruments of Precision Laboratory Apparatus, M-L Catalog
    • 1911

    "The collimators and observing telescopes have apertures of 50mm., and focus by rack and pinion. Two 60 degree prisms of heavy flint glass and of 70mm. side are furnished with the instrument. The mirror may be used in…

    • Part of Instruments of Precision Laboratory Apparatus, M-L Catalog
    • 1911

    An "instrument intended for measuring spectra photographs, gratings, divided scales, or such objects which can be focused by the microscope and will allow rapid measurements of the highest possible accuracy." The design…