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    Kollsman types clearup?
    From: Eric van der Veen
    Date: 2022 Jun 11, 08:02 -0700

    Hi all,

    I purchased and picked a Kollsman periscope sextant this morning. I had been reading up on it (thanks gl for posts and manuals and Arthur Leung for your article on sextantbook.com) 

    Now I got confused over subtypes. The box says it's a type MS28011-3, the unit itself says MS28011-5 (instead of -3), although the mfr's part numbers match. It looks like the MA-1/MA-2 and I read about a type D-1. And Arthur's article mentions it's a MHR1.

    Is there someone who can someone clear this up?

    What's the differences? Specifically, I would need to give the bubble chamber a refill. Luckily, the refill nozzle is on the side (other than in Arthur Leung's unit) so I don not need to remove the diffuser or the bubble chamber. And... what liquid for refill? I've used xylene in other sextants. 

    Thanks in advance!

    Eric

    N52E4 (Roughly)

       
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