M-D Building Products 93975 Smart Tool Adam Digital Slope Walker with Carrying Case Measures slopes, cross slopes, sidewalks, and curb height in handicap accessible areas 16-Inch SmartTool with two pivoting feet set at 12-Inch spacing to provide stable readings Designed to save your back and knees 1-1/2-Inch clearance over debris at construction sites Designed for ADA contractors and inspectors