rob2
Well-Known Member
I suspect my Casio radio controlled wristwatch would be better... especially in the college carpark!
Rob.
Re: Sextant Purchase
- Thread starter Santeh
- Start date
I suspect my Casio radio controlled wristwatch would be better... especially in the college carpark!
Rob.
D
Deleted member 36384
Guest
It would, as would any modern time piece synchronised to the speaking clock on the day of the lesson. So would a low cost plastic sextant, quite a few could be picked up for the price of a metal one. However, if going for a metal instrument why not go the whole hog and have the marine chronometer and stopwatch too (thanks V05). The effectiveness of the learning experience would surely be enhanced.
It has to better than my own experience, no sextant, chronometer and umpteenth generation copies of the lesson notes. I remember very well writing over the letters on the faded Gestetner prints trying to make legible notes. Character building stuff.
BelleSerene
Well-Known Member
The chap in "all is lost" learnt to use his sextant in five minutes.
Can't be that hard and he located his position within 5m every time at any time of day.
Just tell your students to watch the film
It was one of the less plausible scenes in the film. He visibly didn't know what he was doing with the sextant.
KellysEye
Well-Known Member
>He visibly didn't know what he was doing with the sextant.
Out of interest it is much easier and quicker to bring the horizon up to the sun by turning the sextant upside down then fine tuning it with the sextant the right way up. Make sure you have the shades right each way. The previous owner of the boat showed me how to do it.
Out of interest it is much easier and quicker to bring the horizon up to the sun by turning the sextant upside down then fine tuning it with the sextant the right way up. Make sure you have the shades right each way. The previous owner of the boat showed me how to do it.
Poignard
Well-Known Member
Actors often haven't a clue about what they are supposed to be doing. There's a scene in "Tora! Tora" where a Japanese admiral is using his binoculars upside down.
Santeh
New Member
Hello again everyone,
My Tamaya 635S came in today! It is lovely and will work well, I think, for my intended purchase. However, I dud have a question. I noticed two issues were possibly off and, while I corrected one (the small light over the graduated arc was not working, but thankfully I corrected that) the other is something I have not been able to find an answer to online. Specifically, in regards to shade glasses the manual says that there should be "three different densities for direct rays and four for reflected rays." However, I am not clear as to exactly how many shade glasses there should be? My 635S has a total of four, two round and two square. Is this correct? I could not find a picture of a 635S online, thus I cannot compare my unit, but other Tamayas had more shade glasses. If I am missing some, can they be purchased?
Thank you all!
My Tamaya 635S came in today! It is lovely and will work well, I think, for my intended purchase. However, I dud have a question. I noticed two issues were possibly off and, while I corrected one (the small light over the graduated arc was not working, but thankfully I corrected that) the other is something I have not been able to find an answer to online. Specifically, in regards to shade glasses the manual says that there should be "three different densities for direct rays and four for reflected rays." However, I am not clear as to exactly how many shade glasses there should be? My 635S has a total of four, two round and two square. Is this correct? I could not find a picture of a 635S online, thus I cannot compare my unit, but other Tamayas had more shade glasses. If I am missing some, can they be purchased?
Thank you all!
sarabande
Well-Known Member
http://fer3.com/arc/m2.aspx/Sextants-Tamaya-sextant-designs-WEB-ARCHIVES-Jacobs-jan-2009-g6939
and
"I could not find a picture of a 635S online"
https://www.google.co.uk/search?q=T...07AaLp4HwAQ&ved=0CAcQ_AUoAg&biw=1024&bih=1087
Surely, if you are missing some shades, there will be physical evidence of a lacuna ?
and
"I could not find a picture of a 635S online"
https://www.google.co.uk/search?q=T...07AaLp4HwAQ&ved=0CAcQ_AUoAg&biw=1024&bih=1087
Surely, if you are missing some shades, there will be physical evidence of a lacuna ?
ColinR
Well-Known Member
After I did my Ocean YM with a cheap plastic sextant I decided to treat myself to a decent one. I got a refurbished merchant marine one from a place in Southampton, Robertsons or something similar. Its excellent, no comparison and miles easier to use. If interested I will try to dig out the contact details.
BelleSerene
Well-Known Member
peter2407
Well-Known Member
A decent sextant should only be used with a neck strap a la a camera, as opposed to just a lanyard around the wrist as recommended by Saint Tom of Cunliffe ...
Even more so with stooodents ...
Even more so with stooodents ...
