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  • Artist / Maker / Culture: Keuffel & Esser Company  
  • Artist / Maker / Culture: German  
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German (231)
Keuffel & Esser Company (94)
American (61)
French (31)
Scientific Materials Company (26)
English (23)
Department of Physics, Harvard University (14)
Gebrüder Haff (8)
Harvard College (8)
David P. Wheatland (7)
Harvard Engineering Camp (7)
Benjamin Martin Shaub (6)
Schlagintweit Brothers (6)
Central Scientific Company (5)
Harvard Medical School (5)
Joseph Drecker (5)
Theodore William Richards (5)
Wallace C. Sabine (5)
William R. Osgood (5)
Gordon M. Fair (4)
Department of Engineering Sciences, Harvard University (3)
Department of Geology and Geography, Harvard University (3)
Edwin Thacher (3)
Arthur H. Thomas Company (2)
Blue Hill Meteorological Observatory (2)
Brooklyn Thermometer Company (2)
Department of Chemistry, Harvard University (2)
Department of Physics, Bowdoin College (2)
Eugene Dietzgen Company (2)
Hammel, Riglander & Company, Inc. (2)
Harvard Engineering School (2)
Institute of Geographical Exploration (2)
Jerry Donaldson (2)
Palo Company (2)
Physikalisch-Technische Reichsanstalt (2)
Radcliffe College (2)
Robert V. Pound (2)
Theodore Lyman IV (2)
Agfa (1)
Arthur E. Kennelly (1)
Bausch & Lomb Optical Company (1)
Biological Laboratories, Harvard University (1)
Buff & Berger (1)
Buff & Buff Manufacturing Company (1)
C. F. Casella & Co. Ltd. (1)
Charles Moe (1)
Charles X. Dalton (1)
Chemistry Laboratory, Harvard College (1)
Clifford Frondel (1)
Cruft Laboratory, Harvard University (1)

Classification / Category

Hydrometer (31)
Slide Rule (23)
Thermometer (17)
Feet (15)
Organ Pipe (13)
Lens (10)
Sundial (10)
Planimeter (9)
Stand (9)
Diaphragm (8)
Discharge Tube (7)
Drafting Equipment (7)
Eyepiece (5)
Glassware (5)
Ruler (5)
Desiccator (4)
Leveling Rod (4)
Measuring Tape (4)
Microtome Accessory (4)
Burner (3)
Dividers (3)
Drawing Instruments (3)
Lenses (3)
Microscope (3)
Mirror (3)
Prism (3)
Surveying Tape (3)
Tripod (3)
Clock (2)
Diamond balance (2)
Dry Pile (2)
Instrument Component (2)
Lettering Set (2)
Microscope Accessory (2)
Microscope Slide (2)
Pantograph (2)
Polariscope (2)
Proportional compass (2)
Protractor (2)
Rheostat (2)
Surveying Equipment (2)
T-Square (2)
Weights (2)
Accessory (1)
Air Pump (1)
Alcoholometer (1)
Anemometer (1)
Angle (1)
Armillary Sphere (1)
Balance (1)

Collections

Charrette Corporation and Lionel Spiro (7)
Exhibit 2005--CHSI's Putnam Gallery (4)
Clocks and Watches (2)
Exhibit 2008--The Matter of Fact (2)
Exhibit 2011--Cold War in the Classroom (2)
Exhibit 2009--The Matter of Fact 2.0 (1)
Exhibit 2010--Sensations of Tone (1)
Time Exhibit 2017 (1)

Date

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2 eyepieces with cross-hairs

2 eyepieces with cross-hairs

American
1875-1900
Image Not Available

2 filters

French
1875-1925
2 internal aperture stops

2 internal aperture stops

German
1875-1900
2 internal aperture stops

2 internal aperture stops

German
1875-1900
3 cup diaphragms

3 cup diaphragms

German
1875-1900
4.1-inch flat heliostat mirror

4.1-inch flat heliostat mirror

American
mid 20th Century
5 reed organ pipes and 5 pipe boots

5 reed organ pipes and 5 pipe boots

American
1880-1925
7 miscellaneous dust caps for telescopes and lenses

7 miscellaneous dust caps for telescopes and lenses

French
1875-1900
Image Not Available

8 assorted lenses in threaded collars

French
1875-1925
8 miscellaneous aperture stops

8 miscellaneous aperture stops

German
1875-1900
14 miscellaneous lenses

14 miscellaneous lenses

French
1900-1950
60° quartz prism

60° quartz prism

German
1912
/ 27 Next

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The Collection of Historical Scientific Instruments
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