Elcometer® Concrete Crack Width Ruler Card

A quick and easy reference tool to measure crack width and length in concrete or other building materials. Keep this reference tool handy when inspecting slats, walls or other concrete and building materials for safety and manufacturing standards compliance. 
• Sized like a credit card for easy storage
• Clear design allows marks to be placed over cracks and easily determine their width
• Eliminates the need to more expensive, complicated equipment on the job site when inspecting incoming material for quality
Measurement Range: 0.004 - 0.100" (0.10 - 2.50mm)