NavList:

frankreed@HistoricalAtlas.net wrote:

While playing with the clever visual search engine at searchme.com, I came across this web site which offers instruction to build your own metal micrometer sextant:
http://www.geocities.com/richardandtracy/SextantPage1.htm

I don't recall seeing this discussed on the list before.

Also, if you've never seen them, there are a couple of nice plastic sextant projects described on the web site of Omar Reis here:
http://www.tecepe.com.br/nav/XTantProject.htm

-FER

Although not any where as sophisticated, here's a picture of an octant I made some years ago.  I got the impetus to make this 'instrument' after receiving a copy of  'Latitude Hooks and Azimuth Rings' (subtitled How to Build and Use 18 Traditional Navigation Tools) by Dennis Fisher.  I also made the nocturnal shown in the book.

The octant is made of 3/16 inch aluminum plate with paper scales.  Although not equipped with a micrometer, it does have a fine adjustment screw and vernier.






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