AstroLabe

1. Print out a picture of an astrolabe drawing.

2. Glue the copy of the astrolabe drawing to a piece of cardboard. Cut the astrolabe out with scissors.

3.Using scissors or a paper hole-puncher, carefully make a small notch at each of the lines marked along the curved edge of the astrolabe. These notches will be helpful when you're measuring the angle between two celestial objects and you have to hold the astrolabe horizontally.

4.Cut a drinking straw to the same length as the sides of the astrolabe.

5.Tape the drinking straw to the edge with the 90 degrees labeled on it. Be careful to not tape the straw on the astrolabe, but just on the edge.

6.Carefully poke a small hole through the astrolabe where the "X" is marked, pass the string through it, and either knot the string at the back of the cardboard or tape it there.

7.Tie the small weight to the opposite (front) end of the string as shown.

And your finished work should look like this. (Above)

http://cse.ssl.berkeley.edu/AtHomeAstronomy/activity_07.html is where this information from.