Statements (28)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
scientific instrument
|
| gptkbp:alsoKnownAs |
gptkb:video_game
Bubble level |
| gptkbp:contains |
Bubble
Liquid-filled vial |
| gptkbp:hasType |
Carpenter's level
Digital level Laser level Line level Post level Torpedo level |
| https://www.w3.org/2000/01/rdf-schema#label |
Spirit Levels
|
| gptkbp:inventedBy |
17th century
Melchisédech Thévenot |
| gptkbp:material |
wood
Aluminum Plastic |
| gptkbp:measures |
Inclination
Vertical alignment Horizontal alignment |
| gptkbp:requires |
Gravity
|
| gptkbp:usedFor |
Determining level surfaces
Determining plumb surfaces |
| gptkbp:usedIn |
Construction
Carpentry Masonry |
| gptkbp:bfsParent |
gptkb:Internal_Empire
|
| gptkbp:bfsLayer |
8
|