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Gary wrote:

Right,  so you can extract log trigs to a second of arc accuracy, I
thought that was what was wanted. Obviously a table that lists the
values for each second would be 60 times as voluminous as table 33 and
would probably allow interpolation to a 60th of a second which is  20
inches on the ground, way too much accuracy for me.

On May 5, 9:25 pm, Chuck Taylor  wrote:
> Gary LaPook wrote:
> > Table 33 in Bowditch, 1938 edition has logs of trig functions to one
> > second of arc. The rest of the book is interesing too,
>
> Not quite. It has logs of trig functions to one minute of arc, plus "diff" columns
> to facilitate interpolation to the nearest second. I am looking at my copy as
> I write this.
>
> Those same tables are in the 1943 edition, and perhaps others.
>
> Chuck Taylor
>  48 N
> 122 W
>
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