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The HM-643 Recording Pad is used with an HM-642 Scratch-A-Track Motion Monitor to create a continuous graphic record of relative movement of adjacent surfaces in concrete masonry pavements and structures.
The plastic single-use Recording Pad bonds to the surface with super-glue or epoxy (not included) and has space to record data such as date, location, and other relevant information while making a permanent record of movement.
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