32 - Checking the slope of the surface Previous | Next 32 - Checking the slope of the surface 82 views Properties allowedRoles anonymous,basic,standard,extra,member View All Help us to continue to deliver this material We hope you are enjoying the archive content. Please consider making a donation to support our activities. Your contributions will help us to continually add new content and upgrade our digital Archive. Donate Now Related Keywords Reedmkaing, LouisPriour