About this Crack Width Gauge:
- Position the gauge over the crack in the concrete and identify the graded line that best matches the width of the crack.
- Record the crack width, length and location to create a baseline for monitoring.
NOTE: Product comes with Prop 65 warning label when shipped to California. Label reads: "WARNING: This product may contain carcinogen, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.