IC 8617 A Bureau Of Mines Direct-Reading Azimuth Protractor
- Organization:
- The National Institute for Occupational Safety and Health (NIOSH)
- Pages:
- 10
- File Size:
- 3178 KB
- Publication Date:
- Jan 1, 1974
Abstract
This report describes the construction and use of a direct-reading azimuth protractor (DRAP) by the Bureau of Mines for measuring fracture orientations in mines, tunnels, or other excavations having a magnetic environment. The DRAP allows a rapid and simultaneous measurement of dip and azimuth of dip of a fracture plane. The instrument is rugged, lightweight, and easily constructible from standard hardware items. The DRAP can measure dip to within ±0.5° and azimuth of dip to within ±5° of corresponding values obtained with a Brunton compass.
Citation
APA: (1974) IC 8617 A Bureau Of Mines Direct-Reading Azimuth Protractor
MLA: IC 8617 A Bureau Of Mines Direct-Reading Azimuth Protractor. The National Institute for Occupational Safety and Health (NIOSH), 1974.