Guo Shoujing's Observing Instrument Spherical Sundials 3D Printable Model

Guo Shoujing's Observing Instrument Spherical Sundials is a 3D printable model, which we searched from web for you, so you can easily print on your own 3D printer or use print on demand 3d printing service. More 3D printer models from 司天灵台 are here.