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On Wed, 25 May 2005, Bill wrote:

> Do you or other list contributors know what systems other sextants use to
> control slop along the axis?

My SNO-T manual has a picture which shows the drum blown up.
But I could not understand from this picture how it really works
and even what is the purpose of this drum. In particular what this screw
mentioned above really does.

In Freiberg, they had one Freiberger cut with its trommel open
on display. But I had no time to examine it carefully,
busy with trying their art horizon:-)

The art horizon I decided not to buy (it was quite expensive,
even after the negotiations), but the main reason was that it is
very hard to install/adjust.
It is adjusted with two 30" levels (which also need their own adjustment,
but maybe not every time). We failed to install it horizontally on
their table, apparently because the table was shaking.
Anyway, my conclusion was that this beautiful device is usable only from
a big and heavy rock. And certainly not from my "shaking balcony".

Alex.

   

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