Concrete Crack Monitor, Color Clear, Graduation Color Black/Red, Graduation Marks 0 mm, Graduation Units Millimeters, Highest Horizontal Measurement 25 mm, Highest Vertical Measurement 10 mm, Includes Record Sheet, Lowest Horizontal Measurement -25 mm, Lowest Vertical Measurement -10 mm, Material Plastic, Orientation Horizontal, Product Type Concrete Crack Gauge, System of Measurement Metric