휴대용 앙부일구(portable 仰釜日晷, portable angbuilgu) - Korean traditional portable sundial

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Parts to be printed: angbuilgu-portable-body.stl x 1 angbuilgu-portable-yungchim1.stl x 1 angbuilgu-portable-yungchim2.stl x 2 The name "angbuilgu" means a sundial shaped like a cauldron that looks at the sun, given because one side is shaded and shaped like a concave cauldron. This lets you know the time of day and the date. Because it's a concave hemispherical shape, it can more accurately show shadows. There's a solar term line so you can know not only the hour but also the date. The spacing of the solar term line is uneven. It shows that Earth orbits the sun in an ellipse, causing motion speed to be uneven.