Abney Level in hindi

ऐबनी लेवलः
लघुदूरदर्शक, बुदबुद नलिका (bubble tube) और अंशांकित ऊर्ध्वाधर चापाकार मापनी से युक्त एक सर्वेक्षण-प्रवणतामापी (क्लाइनोमीटर), जिसका प्रयोग विशेषतया पेड़ों की ऊंचाई नापने के लिए किया जाता है। इसका आविष्कार ब्रिटिश सेना के कैप्टन ऐबनी ने किया था।

विकिपीडिया से (Meaning from Wikipedia): 

Topographic Abney Level

A Topographic Abney Level is an instrument used in surveying which consists of a fixed sighting tube, a movable spirit level that is connected to a pointing arm, and a protractor scale. The Topographic Abney Level is an easy to use, relatively inexpensive, and when used correctly an accurate surveying tool. The Topographic Abney Level is used to measure degrees, percent of grade, topographic elevation, and chainage correction. By using trigonometry the user of a Topographic Abney Level can determine height, volume, and grade. The Topographic Abney Level is used at the eye height of the surveyor and is best employed when teamed with a second surveyor of the same eye height. This allows for easy sighting of the level and greater accuracy. A ranging pole can be marked at the eye height of the level user or the approximate location of the eye height (i.e. chin, nose, top of head) of the level surveyor must be know of the ranging surveyor.

वेबस्टर शब्दकोश ( Meaning With Webster's Online Dictionary ): 
Hindi: ऐब्नी साधनी.

Tamil: அப்னி மட்டம், நில அளவி.

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