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    Re: Home made FSM for AH or idx-mirror
    From: David Pike
    Date: 2019 Sep 29, 13:16 -0700

    I’m afraid all I did for my plywood sextant was buy a nice looking mirror tile and cut two squares out of the centre, one for the index and one for the horizon mirror.  I masked off half of the horizon mirror and dropped it into ferric chloride solution and washed off once the backing had disolved.  Then I went into a welding supplier and tried a few pieces of shade until I got one that looked about right, which I cut into three squares.  Only a toy really, but the results were quite respectable.  I should have taken it to Littlehampton with me to compare with the Mates against a real horizon.  You can always blame the AH working inland.  DaveP

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