Please Help Identify This Instrument

Discussion in 'Other Electrical Systems Tech.' started by cakollektor, Jun 16, 2007.

  1. cakollektor

    cakollektor New Member

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    We bought this at a garage sale can't find anyone who can tell us exactly what it is. We've searched all over the internet, visited the local VFW, the Planes of Fame the Air Museum in Chino, CA... nobody seems to know. If someone here can help, we would greatly appreciate it.
    Thanks, Denise
    [​IMG][​IMG]
     
  2. trackend

    trackend Active Member

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    It looks like an Inclinometer of some sort but from where I wouldn't know but I suspect FlyboyJ on many of the other guys will be able to tell you
     
  3. FLYBOYJ

    FLYBOYJ "THE GREAT GAZOO"
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    ??????????????
     
  4. SABURO

    SABURO Member

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    Hi cakollektor,
    Could be too easy but is there any references / data plate on your (looks like compass?) ?
    Cheers,

    Olivier
     
  5. cougar32d

    cougar32d Member

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    anybody thinking submarine? just a thought.
     
  6. cougar32d

    cougar32d Member

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    or did i just turn retarded?
     
  7. Thorlifter

    Thorlifter Well-Known Member

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    No cougar, I don't think you are. I'm thinking its a dive plane indicator.
     
  8. cougar32d

    cougar32d Member

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    makes me feel better thanks
     
  9. Micdrow

    Micdrow “Archive”
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    cakollektor, could you give us the dimentions of the part. I have to agree with Thorlifter. It looks way to big to be for an aircraft. At least by looking at the pictues and the location for the placement of fittings.
     
  10. cakollektor

    cakollektor New Member

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    Thanks so much to everyone for the input. In answer to Saburo's question regarding a data plate, there is none... we did find a number stamped into the metal underneath top ring. I wrote it down, but can't seem to find where I wrote it now. I believe it was six digits, the first digit a 3. It came in a wooden box, but I don't know if it is meant to be in the box, or if a previous owner did that. The top ring is 5-7/8" diameter the height is about 4-1/16", not including the post that sticks out the bottom. I added a couple more photos. Again, thanks for the help. Denise
    [​IMG][​IMG]
    [​IMG]
     
  11. SABURO

    SABURO Member

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    cakollektor = the lucky collector of the year !!!???
    To me.....
    This is a Japanese Reflector navigator's compass model 1 or 2, (kai ?).
    According to my sources it could be Type 2 Kai (to be confirm !)
    your compass is missing the reflector mirror (may be not, it was use as a simple aperiodic compass (like the British type P6, P8, P4, P10, P11)on the BETTY FRANCES bomber), the lighting system,the card holder and the data plate (could have been a decal). A specialist could be more precise for the Type.

    Usefull link :
    http://gunsight.jp/b/english/hunatu03e.htm
    Usefull book/
    Monogram close-up N°14 15
    Aviator uniform equipement of IJN (model art magazine) see the scan below.
    Japanese aircraft interior 1940-1945 by Robert C.Mikesh


    Used on: (to be confirm !)
    NELL
    IRVING
    BETTY (aperiodic)
    FRANCES (aperiodic)
    SEIRAN
    JAKE
    PAUL

    P.S. More and more I think your compass must have been used without the miror, for direct reading from above (like the Brtish type, see above) as the numbers are written in a normal way not reverse as they are on the document attached (to be read with a mirror) so I would say Betty bomber or Frances A/C.
     

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  12. just-nick

    just-nick New Member

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    Wow, this is a fun mytery. Do you have any assurange that it is military related at all? I mean yes, its got the look, but it might be some sort of flow meter for a milking parlor for all we know!

    Anyhow, I checked out this site:

    The Fleet Type Submarine Online

    Based on the submarine theory and didn't see any obvious matches on the sttering equipment stations. But someone else might have more time -- and its a great site to look at in any case.

    Does anyone else look at the -40 to 40 scale and the 10 to 0 scale and think some sort of main and vernier scales?
     
  13. FLYBOYJ

    FLYBOYJ "THE GREAT GAZOO"
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    Great work Olivier!
     
  14. Micdrow

    Micdrow “Archive”
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    Wow awsome job there Olivier. I could have stared at that all day and never figured it out.
     
  15. SABURO

    SABURO Member

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    This photo of a Betty G4M bomber cockpit is from "Japanese aircraft interior 1940-1945" by Robert C.Mikesh
    Page 233
    Cheers,

    Olivier
     

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  16. evangilder

    evangilder "Shooter"
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    Really cool find! We have a Betty bombsight at the museum in Camarillo, the only one of it's kind that is known to exist. I wonder how rare this instrument is.
     
  17. cakollektor

    cakollektor New Member

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    Woohoo! That is so cool. I didn't think we were ever going to find out what it was. We bought it to resell on Ebay have been sitting on it for about 6 months because we didn't know how to list it. You made my day, Olivier, thank you! Thanks to all for taking the time to help solve our little mystery. Now that I know what it is, I am going to try to get it listed on Ebay starting tomorrow, in case anyone is interested. We'll even work out some kind of discount if the winning bidder happens to be a Warbird Forum member, since we couldn't have done it without you. I don't know if it's legal (on Ebay) to discount the final price of auction items, but the shipping charges can be discounted or done away with partial refunds are legal. Thanks again, Denise :wave:
     
  18. trackend

    trackend Active Member

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    Great detective work and a great find well done everyone.
     
  19. Thorlifter

    Thorlifter Well-Known Member

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    Nice tracking guys. Sure looks like a dive plane indicator, but I like the diagram you attached, Subaro. I bet you've nailed it.
     
  20. cakollektor

    cakollektor New Member

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    I would like to provide a link to this thread on Ebay when I list this item so people can see the photos posted by Olivier, but I thought I better check here first to make sure it isn't in violation of forum policy or just improper forum etiquette to do so. Please let me know. Thanks, Denise
     
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