HOW-TO: GEAR, TUTORIALS & TIPS RESTRICTION GRADES:A MEASUREMENT-BASED SYSTEM Part 1 of 2: A new way to label restrictions using measurement-based restriction grades. Read RESTRICTION GRADES:FUTURE REVISIONS? Part 2 of 2: A look at potential revisions to the grading system. Read BLOG:LINES OR NO LINES? 3 reasons why guidelines should not be on cave maps, and why I chose to ignore them. Read DIVE GEAR:SURVEY TEMPLATES Gear: Download and print a template for underwater cave survey. Read DIVE GEAR:SCUBA O-RINGS Gear: Download and print a true-to-size table of the 10 most common scuba O-rings. Read USING WALLS:EXPORTING AN SVG Part 7 of 8: Learn how to export your data as an SVG for drafting in Adobe Illustrator. Read GEAR REVIEW:WATERPROOF PAPERS Review: Comparing waterproof papers for the purpose of underwater cave cartography. Read READING MAPS:BCRA SURVEY GRADES Part 5 of 8: A quick look at the BCRA Survey Grade system. Read USING WALLS:ADDING COLOR Part 6 of 8: Learn how to change the style and color of your survey using the Segments Tab. Read USING WALLS:LRUD DIMENSIONS Part 5 of 8: Learn the basic steps to entering LRUD dimensions to underwater dive survey. Read READING MAPS:CROSS-SECTIONS Part 4 of 8: A quick look at how to make better use of the cross-sections on an underwater cave map. Read READING MAPS:UIS CAVE SYMBOLS Part 3 of 8: A summary of the UIS Cave Symbols for cave divers. Read READING MAPS:UIS MAPPING GRADES Part 2 of 8: A quick look at the UIS Mapping Grade system. Read USING WALLS:PRINTING A SURVEY Part 4 of 8: Learn how to print an underwater cave survey using Walls Project Editor. Read USING WALLS:GOOGLE EARTH PRO Part 3 of 8: Learn how to export your dive survey to Google Earth using shapefiles. Read USING WALLS:CONNECTING CIRCUITS Part 2 of 8: Connect underwater circuits using the cave survey application, Walls Project Editor. Read READING MAPS:WHICH WAY’S NORTH? Part 1 of 8: Learn the basic differences between True North, Magnetic North, and Grid North. Read GEAR TUTORIAL: MAKING DIVE SLATES DIY Series: Make a custom dive slate using PVC tubes from the hardware store. Read USING WALLS: ENTERING DIVE SURVEY Part 1 of 8: Create a project and enter underwater cave survey using the Walls Project Editor. Read INTRO DRAFTING: TRACING WALLS Part 1 of 3: Trace the walls over a scanned section of the Dos Palmas Cartography Project. Read INTRO DRAFTING:ADDING COLOR Part 2 of 3: Add color to an underwater cave map using Adobe Illustrator. Read INTRO DRAFTING:CROSS-SECTIONS Part 3 of 3: Trace the cross-sections over a scanned section of the Dos Palmas map. Read MAPPING CAVES: INTRODUCTION Part 1 of 5: Learn the basics of how cave divers explore, survey and map flooded cave systems. Read MAPPING CAVES: SURVEY & EXPLORATION Part 2 of 5: A basic overview of cave diving survey and exploration. Read MAPPING CAVES: SKETCHING UNDERWATER Part 3 of 5: A quick look at how cave divers draw underwater maps. Read MAPPING CAVES: DIGITIZING THE MAP Part 4 of 5: Learn the basics behind making digital copies of hand-drawn maps. Read MAPPING CAVES: ALTERNATIVE METHODS Part 5 of 5: A short look at photogrammetry and further reading on cave cartography. Read