DIY A4 sextant

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=aTm6SjUeBZI

Build your own sextant (celestial navigation instrument) • This A4 sized design ends up with radius about 17 cm, which is enough to read minutes ( +-10' ). • Print on inkjet or laser printer • The configuration is different from most sextants in that the Vernier scale is on top of the main arc scale. Normally the Vernier is underneath, attached to the arm. • To read the minutes part, first estimate from A tick position into the degree, • than find the tick on the Vernier that matches with the tick on the main arc. • Two 60' Verniers side-by-side allows reading high angles. If one Vernier is out of the arc, use the other ( cannot read much above 90 deg I'm afraid :o( • Uses materials: foamboard, mirrors, toothpicks, Lego pieces and simple tools. • See: • Instructable: https://www.instructables.com/id/A4-S... • Github repository: https://github.com/omarreis/diySextan...

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