Slide Rule Workshop Rekenlinialenworkshop

Dutch Circle of Slide Rule Collectors Kring Historische Rekeninstrumenten

This page lists slide rule pictures or links contributed by you for the online International Slide Rule Workshop
23 February 18:00 CET (17:00 GMT) Deze pagina toont afbeeldingen of links die door u zijn bijgedragen voor de online Internationale Rekenlinialenworkshop.
23 februari 18:00 MET

  1. Logarex01 Logarex Typ01 Nathan Zeldes
    We know the maker but nothing else – and it is a VERY weird design (look at the back too).
     — Some information by Enige informatie door W. Denz
    — Listed, but not shown, on Vermeld, maar niet getoond, op Logaro.cz
       — History of LogarexGeschiedenis van Logarex
     
  2. Pose Marre The “Pose-Marre” pen slide rule Nathan Zeldes
    We have the “Gebrauchsmuster” but no other information about who manufactured it.
     
  3. EngPen The EngPen Nathan Zeldes
    We know really nothing about this pencil slide rule, except for US patent 883800 granted to William Harlow, which describes an instrument that is not completely identical to this one.
  4. Kawamura Kawamura's Position Line Calculator” John Mann
    Questions:
    1. Where and when was it made?
    2. Which company made it?
    3. How to use it: what are “h”, “d”, “l” what do the answers mean?
    4. Why are there more scales on this than on the D&P HR1 ?
  5. Zelluglas “Zelluglas” slide rule Leo van der Lucht
    Questions:
    1. Has anyone ever seen this slide rule? It makes me suspect that it comes from German-speaking country because of the descriptions on the back
    2. Who made it? “Zelluglas” is not found as information in relation to slide rules.
  6. black disc An unknown black disc. Leo van der Lucht
    Questions:
    1. What is this disk for?
    2. How does this disk work?
    3. Can a manufacturer be identified?
  7. HH “HH” Wooden slide rule Chris Hakkaart
    Question:
    1. What is “HH”?
  8. Plastic slide rule Plastic slide rule Chris Hakkaart
    Question:
    1. Any idea?
  9. Special marking Two slide rules with special figure Chris Hakkaart
    Questions:
    1. What does the special figure mean?
    2. Name?
  10. Slide rule data slips Simple Slide Rule with no name Chris Hakkaart
    Question:
    1. Name?
  11. bulge Folded plastic with plastic slide Chris Hakkaart
    Question:
    1. Name?
    2. Purpose of small bulge at each side?
  12. DP slide rule with db, μv and MHz D&P slide rule with db, μv and MHz scales. Nikos Velissaris
    It is made of plastic and dated probably around 1935 or 1936.
    Questions:
    1. What is it used for?
    2. When was it made?
  13. Ich Dien “Ich Dien” slide rule Peter Hopp
    Arranged by S. Waddington, Barnsley.
    Questions:
    1. ???
  14. Nestler Nestler slide rule Jean Paul Hild
    1. When was it manufactured ?
      Seems to be of SOHO type but I couln'd find other Soho rules from Nestler
    2. Why are the scales deferred ? (see picture)
  15. I of C I of C slide rule Jean Paul Hild
    1. Who made it ?
    2. Where was it made ?
    3. What did it serve for ?
    4. How does it work ?
    5. What is the purpose of the two windows in the bottom ?
  16. German silver German silver slide rule James Bready
    1. ???
  17. Catalog Number: 1999.0068.01 Four-slide slide rule Amy Ackerberg-Hastings
    National Museum of American History, Catalog Number 1999.0068.01
    1. ???
  18. Catalog Number 1978.2289.01 Japanese Artillery Simplex Slide Rule Amy Ackerberg-Hastings National Museum of American History, Catalog Number 1978.2289.01.
    Note: The PowerHouse Museum link should read https://collection.powerhouse.com.au/object/384855
    1. Maker ?
  19. German SOHO? Unknown Soho found in Germany Fred Astren
    1. What is this?
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