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Applicant:
Indian Institute of Technology (IIT) Roorkee 
Title:
Laser Abney Level  
Inventor(s):
Sushil Kumar and Kamal Jain 
Application type:
Applied - 2013-01-23 
Application Number:
171/DEL/2013 
Applied at:
India 
Entered by:
Indian Institute of Technology (IIT) Roorkee 
Abstract:
Vertical angle measurements of target point of earth’s horizon at observer position with the help of Abney level is most effective, simple, less instrument weight and less costly method for surveying in open surface, mines and inside buildings. Alignments of the instrument suffers from instrumental errors, personal errors and natural errors. To minimize these errors a laser device with laser beam parallel to principle axis of Abney level is fixed at bottom surface of Abney level tube for pin point adjustment. 

 
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It has always been the basic tenet of the Government of India, in generously funding R&D efforts at academic institutions over the years, that facilities established through such support be made available to those needing them and qualified to make use of them for their own research work
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