NavList:

Well I was not too happy about throwing all that perfectly good tea into the Boston harbour - what a waste - made me choose the Hughes MkIX instead of the Kollsman ... :-)

(Actually I had not seen a Kollsman until fairly recent times ..very good they are too !).
------
On a more serious note, I wonder if there must have been some collaboration going on between the Brits and USA in the cold war period post-WW2 for aircraft military sextants, as there are features common to both which seem to have been developed at the same time. In particular, the continuously integrating mechanical ball/cone integrator. It might have been just one company studying the methods of the other, but as there was active cooperation during WW2 and after in NATO I wonder if there was a common standardised military specification put out for NATO use which gave that commonality in the instruments.

Douglas Dennny.
Chichester. England.
----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------