>Hi,
>Actually I think you want to use the zone that will minimize the
>zonal errors, i.e. choose the best reference parabola. From what I remember
>about bygone days when I used these Texerau's method does this. The outer
>zones are much more finicky about the values that they will accept and the
>important data are the reading intervals.
>
> Cheers
>
> Lou
Then Bob wrote ...
>
>
>I have problems reading the center zone which is not critical anyway
>so I use the 2nd or 3rd zone for my starting point. Just work both ways
>as the outer zones are the critical zones. In zone 2 or 3 you find it much
>easier to read and get a consistent reading. This is using the center
>zone as zone 1. Thats my opinion.
>Bob Pfaff
>
Hi Lou and Bob,
Thanks for you answers.
I think I was attaching too much importance to the central zone (which departs the least from the parabola) and maybe not concentrating enough on the edge zones. Thanks for the tips !
Carl Brennan.
P.S. I'm familiar with Texereau methods. Must look them up again.