Permanently record crack motion 24x7

Product Description

The BUILDERA SCRATCHMARK™ Crack-Motion Monitor continuously records differential crack movement in foundations, retaining walls, beams, joints, floors, ceilings, and other reinforced concrete structures with visible cracks. A patented spring-steel tracker arm extends over the crack, allowing crack movement in 3-axes (X, Y and Z) while recording two-dimensional (planar) crack displacement on a permanent tracking card 24x7.

The patented system scratches an indelible record using low-cost SCRATCHMARK media with a durable weather-resistant coating. Ideal for property owners, building inspectors, structural, civil and geotechnical engineers, the BUILDERA SCRATCHMARK is an ideal companion to traditional 2D and 3D crack monitoring. Use for existing or new construction, seismic retrofits and earthquake hazard tracking. Mount using Buildera-approved adhesive, such as STRUPOXY Structural Epoxy or stainless-steel screws and concrete anchors.

Features and Benefits

  • Permanent record: Measure 24x7, eliminating interim site visits to track changes

  • 34-mm crack-width measurement range: ±17 mm radially from centerpoint

  • Infinite resolution: Tracker captures every nuance

  • Corrosion-resistant: Proprietary copper-nickel plating inhibits rust

  • Rugged: Heavy-gauge spring steel tracker arm stays stiff under compression

  • Proven quality: Engineered and made in the USA


  • Airports, bridges, dams, highways, power plants

  • Basements, beams, foundations, retaining walls, seismic retrofits, unreinforced masonry (URM/URB)

  • Commercial and residential structures, historic monuments

Ordering INformation

BUILDERA SCRATCHMARK™ Tracker Arm (Individual Unit)
EAN 0816291010129 | UPC 816291010129

BUILDERA SCRATCHMARK™ Media Refills (10-Pack)
EAN 0816291010136 | UPC 816291010136

Individual units sealed in a heavy-duty tube. Includes installation instructions, mounting hardware, and one crack-progress card. Epoxy sold separately. Also available in bulk for resellers and volume end-users. Contact BUILDERA for volume/bulk pricing.