7 astronomical instruments of AstroNavigators
Navy Sextant (1 piece built)
Armillary Sphere (5 pieces built)
Newtonian Mirror Telescope (1 piece built)
Lens Telescope (2 pieces built)
Guo Shoujing's Jianyi aka simplified armillary (7 pieces built)
Syrian Astrolabe (1 piece)
Capitain Cook's Octant (1 piece)