NavList:

   

Reply

Greg,
Both Freiberger and Cassens-Plath did this for me.
I don't remember how much did it cost, but the price was moderate and
reasonable.

However, I have to say that both certificates are of no practical
use. Only some assurance that everything is OK. C-P just wrote "Good for
practical needs",
and Freibegrer filled the table with some seconds...
I was never able to extablish the relation of these numbers to my
observations.
Freiberger also adjusted some points, put some lubricant in on telescope etc.

Alex.


> Hi All,
>       Does anyone know of a service that would check the certification
> of a sextant and supply me
> with a new calibration card? How much would this cost? Is it silly to do
> this on a instrument from
> 1982? The cert that came with it originally said: "no errors for
> practical navigation" but down in
> the lower right corner it said "RES: 0.02" which I would take to be a
> resolution of 0.02 of a degree
> i.e.; a little over a minuet of arc (0.016666) But I have seen certs on
> sextants showing errors in
> arc seconds. In practical terms how important is this?
> Thanks,
>        ~Greg
>
>
> On 12/26/2013 03:55 PM, Greg wrote:
>> Hi all,
>>   forgive the bandwidth but is anyone here familiar with a sextant
>> sold as the "Luna Sextant"
>> by the apparently now defunct "Luna Trading Company, Matairie LA" I
>> just bought it last week
>> off of ebay from a guy in Georgia. The sextant appears in to be
>> pristine condition no wear on
>> the worm or the scale gear. I saw another one being sold by a
>> Salvation Army group in Texas,
>> but it was bid up too high for me. This one cost me $425. we have not
>> had any clear view of
>> the sky due to clouds to try a 'real' sight, then the holiday, but
>> initial puttering with it shows that
>> I can set the IE to zero, and if I sight on a distant house etc, and
>> take a altitude, then return to
>> 0 degrees the IE is still zero - (unlike my plastic Davis sextant).
>> The seller threw in a book he had
>> got with it called "Celestial Navigation" (C) 1989 by Tom Cunliffe The
>> book has the previous
>> owners name, FL address, and phone number but the phone is
>> disconnected and I think this
>> might have been purchased at an estate sale for speculation (?) Any
>> Idea how good or bad this
>> instrument is, and what I should expect for accuracy (on land for the
>> moment)?
>> Many thanks in advance,
>> ~Greg
>> 'Svenska Flicka'
>>   Cat 28 #467
>>
>
>
> : http://fer3.com/arc/m2.aspx?i=125941
>
>
>
>

   

Reply