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| dragonfly; level; spirit level | |||
| bubble level | |||
| spirit tube; tube (filled with spirit); level glass | |||
| bank indicator | |||
| water-level; level vial | |||
| surveyor’s level | |||
| bubble level; spirit level (vial, bubble) | |||
| bubble tube (Glasröhrchen der Wasserwaage, slightly bowed glass tube/vial in spirit level) | |||
| spiral; pivot; camel; arabesque spin; Jackson Haines; horizontal spin | |||
| air level; bubble gauge; dragon fly; water level; ball (Wendezeiger); ball-bank indicator (Wendezeiger); bench level; bubble; inclinometer (Fluginstrument); inclinometer ball (Fluginstrument) | |||
| clinometer | |||
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| dragonfly (Libellula); dragonfly Any of the insects composing six families of the suborder Anisoptera and having four large, membranous wings and compound eyes that provide keen vision | |||
| surveyor's level | |||
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| dragonflies | |||
| odonate | |||
| dragonflies and damselflies (Odonata) | |||
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Libelle : 28 phrases in 9 subjects |
| Astronomy | 6 |
| Construction | 2 |
| Entomology | 2 |
| Life sciences | 5 |
| Measuring instruments | 9 |
| Optics branch of physics | 1 |
| Speed skating | 1 |
| Surveying | 1 |
| Technology | 1 |