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Mika,

I hope this isn't a copy of the multiple sources for using a vernier you are
going to get.  Attached is a pdf file (which I hope you can open) from the
sextant group on Yahoo.com at  http://groups.yahoo.com/group/sextants/
Which you can join.  There are lots of files, manuals etc  on sextant use,
history and other items of interest.

Best source I have seen is Peter Ifland's book...Taking the Stars which you
might look for.  

Hope this helps..

Jim Dullea
Tech Marine Business, Inc

-----Original Message-----
From: Navigation Mailing List [mailto:NAVIGATION-L@LISTSERV.WEBKAHUNA.COM]
On Behalf Of m m
Sent: Thursday, February 20, 2003 2:12 AM
To: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM
Subject: Help needed on using C.Plath sextant from 1928

Hi,

I have borrowed a C Plath sextant (year model 1928) in order to test whether
if it is still accurate and functional or not.

It's in pretty good shape and You can see a colour shot of it at address:
http://www.geocities.com/jr_seaman/untitled-1.jpg

Now, I would like to ask you how to read the exact angle value.

There is an magnifying glass at the end of the moving arm. This view's lower
part is pointed to a little scale from 0 to 10 while each one of these
number gaps is divided further to six sub gaps. So 60 sub gabs plus 3 more
before 0 and 3 more after 10. The views upper part sees the angle scale. So
in a way this view's value must be a combination of upper and lower
scales...

You can move the magnifying glass over and around that scale area and lock
it with a screw.

Do you have a clue what is the correct way to use these parts and read the
values in order to obtain the very exact angle value?

I would appreciate any help on this. Link to some manual would be as great
help!

I would also like to hear your opinion about repairing this sextant abroad
in case it needs fixing - or should it be fixed at all?

Thank you in any case!
Kind regards Mika
UT+2


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