Re: Another Davis Instruments Mark 15 Question
Subject: Re: Another Davis Instruments Mark 15 Question
From: Ken Gebhart (gebhart@XXX.XXX)
Date: Sat Mar 01 2003 - 16:38:18 EST
Davis has always stated that no specific accuracy is implied (as compared to
metal sextants). I suppose this means that if the sextant is put on a testing
machine, results will differ with temperature, and maybe even time. The
consensus among many people is that observations will fall within 3 minutes
of true if the operator is experienced and checks the IC before and after
every shot. Among inexperienced and/or careless operators, errors around 5
min. are reported, and in some extreme cases 10 - 13 mi nutes.
Ken Gebhart
George Istok wrote:
> I have been corresponding with someone at Davis Instruments who has just
> informed me that the accuracy rate of the Mark 15 sextant is +/- 5 degrees.
> I am hoping there is a typo somewhere in his message. Also, I am not sure
> what accuracy rate means. Even though the sextant is plastic, low cost,
> etc., surely it has better accuracy than 5 degrees. Any thoughts?
>
> George Istok
> Senior Consultant
> Signal Hill Consultants, Inc.
