Planetary Astronomy Semester Project Download a description of the project Here is a link to my 3D design for a quadrant. A quadrant is a rather simple instrument used to measure vertical angles; what we call altitude in astronomy. Here’s a page with quite a few interesting projects. The basic design of each has been pretty well calculated for you already. Sites that you can use to create your 3D printing file thingiverse tinkercad
Carpe Caelum Planetary Astronomy