H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/32
H04N 7/18 (2006.01) E21B 15/04 (2006.01)
Patent
CA 2021781
Device for positioning of a drill bit (1) at a positioning plane (2). A drill rig (3) is provided with two video cameras (9) for sensing the position of a light source (8) adjacent the drill bit. The video cameras are aligned in parallel. The image fields of the video cameras are displaced such relative to each other that the light source gives two points (20,21) on a monitor (10) common to the two cameras if the light source is situated outside the positioning plane and one point (11) if the light source is situated in the positioning plane.
Atlas Copco Construction And Mining Technique Ab
Fetherstonhaugh & Co.
LandOfFree
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