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    Re: Fine adjust a Davis Mk 3
    From: Greg Rudzinski
    Date: 2016 Mar 26, 17:20 -0700


    Ha ! I just added a Davis MK 3 to my clutch of sextants and am at this very moment working out how to improve performace on this model. The first thing done was to add solar film filters which aids in index error determination showing a very sharp Sun. An artificial horizon is being used for accuracy testing. A separate post will show working notes, modification pics, and conclusions on how to squeeze out a little bit more accuracy on the Davis MK 3.

    Greg Rudzinski

    From: Frank Reed
    Date: 2016 Mar 25, 23:01 -0700

    The plastic Davis Mk 3 sextant is an incredibly basic, yet fully-functional, navigation-quality sextant. You could cross oceans with one of these things. They look flimsy, distractingly cheap, but as proper instruments of reflection they do work, and they are capable of measuring altitudes within three or four minutes of arc with just a little care in the observation process.

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