Abney level
https://w3id.org/framester/wn/wn30/instances/synset-Abney_level-noun-1 <https://w3id.org/framester/wn/wn30/schema/NounSynset>
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Abney level
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02667693-n
Abney level
102156701
102576298
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0
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0
a surveying instrument consisting of a spirit level and a sighting tube; used to measure the angle of inclination of a line from the observer to the target
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102667693