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Prismatic Astrolabe
Prismatic Astrolabe

Prismatic Astrolabe

Datecirca 1920
Inventory Number5270a
ClassificationPrismatic astrolabe
Subject
    Dimensions21 x 24 x 64 cm (8 1/4 x 9 7/16 x 25 3/16 in.)
    storage: 25.8 x 70.5 x 31 cm (10 3/16 x 27 3/4 x 12 3/16 in.)
    Material
      Accessories2 metal vials of mercury; artificial horizon (stored in mercury cabinet); copy of intructions in English and French (in manila folder addressed to "Mr. E. Gay, Allison Burr Hall, Harvard University," and stamped CONFIDENTIAL); bound book of star positions(in instrument file)
      InscribedSOCIETE d'OPTIQUE & de MECANIQUE de Hth PRECISION 125 Bd Davout Paris N° 19
      ProvenanceInstitute of Geographical Exploration, Harvard University; transferred to CHSI October 1955.
      Historical AttributesUsed during World War II between Feb. 1942 and Oct. 1943 by the U.S. Army Air Forces for strategically vital mapping projects outside the continental U.S. Borrowed from Harvard Univ. Institute of Geographical Exploration by Hg 1st Mapping Group Bolling Field- D.C.
      Prismatic Astrolabe,  No 53
      Société d'Optique et de Mécanique de Haute Précision
      Date: circa 1940
      Accessories: 1 vile for mercury, artificial horizon(stored in mercury cabinet), 3 RAY-O-VAC size C batteries & 1 EVERYREADY No 703 3 Cell battery (removed; documented as 2007-1-0548 and 2007-1-0173; and destroyed), accessories case (test tubes, brush, small light bulb, spare eye piece), photocopied manual and forms in envelope (in instrument file), wood case.
      Object number: 5271
      Prismatic Astrolabe
      Société d'Optique et de Mécanique de Haute Précision
      Accessories: Xeroxed Astrolabe instructions, several accessories
      Object number: 1997-1-1851
      Prismatic Astrolabe
      Société d'Optique et de Mécanique de Haute Précision
      Accessories: Xeroxed Instruction Manual/ Keys
      Object number: 1997-1-1852
      tripod for prismatic astrolabe, No. 19
      Société d'Optique et de Mécanique de Haute Précision
      Date: 1900-1950
      Accessories: carrying bag
      Object number: 5270b
      tripod for prismatic astrolabe, no. 54
      Société d'Optique et de Mécanique de Haute Précision
      Date: 1900-1950
      Accessories: carrying bag
      Object number: 1996-1-0108
      tripod for prismatic astrolabe, no. 55
      Société d'Optique et de Mécanique de Haute Précision
      Date: 1900-1950
      Accessories: carrying bag
      Object number: 2005-1-0004
      linear dividing engine part
      Société Genevoise pour la Construction d'Instruments de Physique et de Mécanique
      Date: circa 1900
      Accessories: wooden case
      Object number: 1997-1-0354f
      linear dividing engine part
      Société Genevoise pour la Construction d'Instruments de Physique et de Mécanique
      Date: circa 1900
      Object number: 1997-1-0354b
      linear dividing engine part
      Société Genevoise pour la Construction d'Instruments de Physique et de Mécanique
      Date: circa 1900
      Object number: 1997-1-0354c
      linear dividing engine part
      Société Genevoise pour la Construction d'Instruments de Physique et de Mécanique
      Date: circa 1900
      Object number: 1997-1-0354e
      linear dividing engine part
      Société Genevoise pour la Construction d'Instruments de Physique et de Mécanique
      Date: circa 1900
      Object number: 1997-1-0354d
      linear dividing engine part
      Société Genevoise pour la Construction d'Instruments de Physique et de Mécanique
      Date: circa 1900
      Object number: 1997-1-0354a