Concrete Crack Width Ruler, Clear Crack Width Gauge High-Precision Measurement Tool for Precise Inspection of Surface Defects (3 Piece)

This transparent, flexible concrete crack monitoring gauge allows you to measure cracks, scratches, and surface defects down to 0.04mm—critical for identifying early signs of structural wear, water damage, or corrosion in concrete, asphalt, and masonry.

• 【Precise Measurements】Measure cracks, scratches, and defects with ±0.01mm accuracy! Covers point diameters (0.05-2mm) and crack widths (0.03-2.2mm)—perfect for detecting early structural damage.
• 【Engineer-Trusted Durability】Made of flexible transparent PET material resistant to scratches, chemicals, and UV exposure. Survives harsh job sites and fits in your pocket.
• 【Instant On-Site Inspection】No setup needed—place the crack measuring ruler directly over defects. Compare markings visually or with magnifiers for instant readings.
• 【Versatile & Lightweight】Doubles as a crack gauge card for measuring surface holes, spalling, or rebar exposure. Ideal for concrete walls, pavements, bridges, and tunnels.
• 【Convenient and Portable 】The crack gauge width ruler is very lightweight and portable, it easy to monitor the cracks variation over time. If you have many cracks that you are planning on addressing, it is save time.