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  1. elkcub

    Chronology of focus wheel styles & eye cup styles?

    "Had one," what? Ed :unsure:
  2. elkcub

    Chronology of focus wheel styles & eye cup styles?

    Never! They were always Phillips head screws from the first Audubon in 1958 (see pic) to the last in 1999-2000. * See attachment to post #5 to determine manufacturer for each model. The manufacturer did change from Tamron Optical Co. to Hiyoshi Kogaku around 1970. Ed * Prior to 1960 the...
  3. elkcub

    Chronology of focus wheel styles & eye cup styles?

    I sent you a PM (private message).
  4. elkcub

    Chronology of focus wheel styles & eye cup styles?

    I'm just funnin wid ya. :giggle: Ed
  5. elkcub

    Chronology of focus wheel styles & eye cup styles?

    Hi Charlie, I don't know much about the mechanical aspects. If you're really interested I'd suggest sending a PM to Bill Cook, aka WJC. Congratulations! After several years, you are the first and only one to pick up on the wide range of possibilities for systematically computing binocular...
  6. elkcub

    Chronology of focus wheel styles & eye cup styles?

    Indeed. One might even wonder why you bought it in the first place? :unsure:
  7. elkcub

    Chronology of focus wheel styles & eye cup styles?

    Personally, the 804R is one of my favorites.
  8. elkcub

    Chronology of focus wheel styles & eye cup styles?

    Steve, During the fifteen year evolution of the standard Type 4, several coating changes were made from Multi-Coated (MC) to Fully Multi-Coated (FMC). There were at least three MC versions (including the 804R), and one or two FMC versions. The 804ED also had at least two FMC versions. They...
  9. elkcub

    Chronology of focus wheel styles & eye cup styles?

    A great deal of info. about Swift binoculars can be found on this thread where we discovered that after 1960, which is when Swift Instruments was first incorporated, the first two digits of the s/n show the year of manufacture. This holds up for Tamron and Hiyoshi Kogaku products and probably...
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