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George,
In a previous message I suggested some alternative
to displacing the index method.
How large is the area on the arc that you cannot read?
Alex
On Sun, 30 Apr 2006, George Huxtable wrote:
>
> Frank wrote-
>
> | By the way, as a hypothetical, how could you use a sextant with a dead
> | section, from whatever cause, close to zero degrees? The sextant would certainly
> | be a nuisance, but it would still work.
>
> I'm not sure. I can see that displacing the zero position of the sextant to be on the working part of the arc, by misaligning the
> adjustments of the mirrors, might work, depending on the range of adjustment that was available. I doubt that would work, with the
> instrument that I tried, because its blank-area was so wide. Does Frank have a cleverer method, that would work with a Vernier
> instrument?
>
> George.
>
> ============
>
> contact George Huxtable at
> or at +44 1865 820222 (from UK, 01865 820222)
> or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
>
