This publication provides introductory technical guidance for civil engineers, geotechnical engineers and other professional engineers and geologists interested in measurement of rock discontinuities and rock quality designation. Here is what is discussed: 1. BOREHOLE LOGGING 2. ORIENTED CORE 3. BOREHOLE CAMERAS 4. LINEAR SCANLINE SAMPLING 5. WINDOW SAMPLING 6. TERRESTRIAL DIGITAL PHOTOGRAMMETRY (TDP) 7. STRUCTURAL DATA PRESENTATION 8. ROCK QUALITY DESIGNATION.