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HM-634 Crack Monitor Plus is made of clear polycarbonate. Adjustable slots for screws provide secure placement and tamper-resistance. Once in place, the monitor’s two plates can move independently. Plates have fixtures for precise measurement to ±0.1mm (0.004in) with TSA-270 and TSA-271 Digital Calipers. Monitoring in three dimensions can be achieved using a second Crack Monitor Plus. View full line of our Crack Monitors or the Crack Monitor Plus is available in Concrete Crack Monitor Kits.
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