What is THIS?? - Ships Nostalgia
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What is THIS??

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  #1  
Old 20th November 2008, 12:03
JoK JoK is offline  
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What is THIS??

Anyone have any idea what this is?
We certainly don't, it was in with our special tools. It is about 4"x6".
It has two bubble levels at 90* and three brass leveling screws.
The top has a smoked glass plate set into it.
Any thoughts?
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  #2  
Old 20th November 2008, 12:34
Brad Brad is offline  
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Its an artificial horizon for use with a sextant.

That's my guess.

Last edited by Brad; 20th November 2008 at 12:35.. Reason: adding an extra comment
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  #3  
Old 20th November 2008, 12:37
JoK JoK is offline  
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Well if that is the case, no wonder we didn't know what it was!!

I wonder if I should have posted this in the general mess topic.
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  #4  
Old 20th November 2008, 13:00
Allan Wareing Allan Wareing is offline  
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Quote:
Originally Posted by JoK View Post
Anyone have any idea what this is?
We certainly don't, it was in with our special tools. It is about 4"x6".
It has two bubble levels at 90* and three brass leveling screws.
The top has a smoked glass plate set into it.
Any thoughts?
Brad
Jok is right,in W.W.2 the Desert Rats used dirty sump oil in a shallow tray for the same purpose. It also had the advantage of not needing levelling screws.
From an ancient 'Ham Bone' user, Allan

Last edited by Allan Wareing; 20th November 2008 at 13:05..
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  #5  
Old 20th November 2008, 13:10
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mcotting mcotting is offline  
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Does it get attached to the sextent? If so, how?
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  #6  
Old 20th November 2008, 13:15
Brad Brad is offline  
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not sure how they work to tell you the truth, only that they are used when you can't see a horizon (eg. when you're ashore or close to land) I only ever used a sextant at sea so.....

you obviously wouldn't use it at sea..... i remember teasing loads of cadets with the spirit level gags.
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  #7  
Old 20th November 2008, 14:08
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mcotting mcotting is offline  
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I thought maybe you could use it at sea when there was no clear horizon?? Like at night??
Of course, not needed now, what with GPS, ECDIS, ARPA, AIS, etc, etc.
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  #8  
Old 20th November 2008, 16:09
JoK JoK is offline  
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That is what the Captain told me-used at night.
We have been looking at this for awhile, let me tell you.
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  #9  
Old 20th November 2008, 17:56
K urgess K urgess is offline
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Not much use on a sextant.
There was usually a bubble fitting available or a special bubble sextant. They had a single bubble that had to be centred in a circle to get the sextant level.
This looks more like some sort of surveying instrument level.
There is something similair used for leveling an astro compass in an aircraft.
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  #10  
Old 20th November 2008, 18:15
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joebuckham joebuckham is offline  
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Quote:
Originally Posted by JoK View Post
That is what the Captain told me-used at night.
We have been looking at this for awhile, let me tell you.
hi jok

instructions for use courtesy of nicholls concise
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