Difference between revisions of "Alinement clamp"

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(Created page with "A setscrew-equipped, universal-type clamp from one side of which a slotted angle-iron wand, about 18 in (45.7 cm) long, extends outward from a clamping device at 90 degrees ....")
 
 
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A setscrew-equipped, universal-type clamp from one side of which a slotted angle-iron wand, about 18 in (45.7 cm) long, extends outward from a clamping device at 90 degrees . May be made to fit any size drill rod and is used in pairs, leapfrog fashion, to orient successive rods in a specific compass direction as these are lowered into a borehole being surveyed by the acid-bottle method. By this means, the bearing and inclination of a drill hole may be determined in formation or under conditions where a Maas- or other-type magnetic compass cannot be used. Long  <br/>Source: Dictionary of Mining, Mineral, and Related Terms
 
A setscrew-equipped, universal-type clamp from one side of which a slotted angle-iron wand, about 18 in (45.7 cm) long, extends outward from a clamping device at 90 degrees . May be made to fit any size drill rod and is used in pairs, leapfrog fashion, to orient successive rods in a specific compass direction as these are lowered into a borehole being surveyed by the acid-bottle method. By this means, the bearing and inclination of a drill hole may be determined in formation or under conditions where a Maas- or other-type magnetic compass cannot be used. Long  <br/>Source: Dictionary of Mining, Mineral, and Related Terms
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[[category: geology]]

Latest revision as of 10:31, 26 May 2020

A setscrew-equipped, universal-type clamp from one side of which a slotted angle-iron wand, about 18 in (45.7 cm) long, extends outward from a clamping device at 90 degrees . May be made to fit any size drill rod and is used in pairs, leapfrog fashion, to orient successive rods in a specific compass direction as these are lowered into a borehole being surveyed by the acid-bottle method. By this means, the bearing and inclination of a drill hole may be determined in formation or under conditions where a Maas- or other-type magnetic compass cannot be used. Long
Source: Dictionary of Mining, Mineral, and Related Terms


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