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US 8,539,688 B2Granted
Translucent ball cavity cube vial
AssigneeVernon K. Wing
InventorVernon K. Wing
Life of this patent
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Abstract
A ball cavity cube vial comprising a cube made of an at least translucent material, and having a sealed ball cavity in its center, said ball cavity being incompletely filled with a liquid medium such that a bubble is left inside of said ball cavity; and markings associated with said cube, said markings being calibrated to function as reference points for said bubble.
Claims7
An artifact comprising:
- a cube made of an at least translucent material, and having a sealed ball cavity in its center, said ball cavity being incompletely filled with a liquid medium such that a bubble is left inside of said ball cavity;
- a freely floating globe inside said ball cavity;
- and
- markings associated with said cube, said markings being calibrated to function as reference points for said bubble and the globe.
1 more element
Dependencies are inferred from the claim text.