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Crack Comparator Card measures crack widths of concrete used in roads, pavements, bridges, and other structures. It can monitor crack width from 0.1 to 7.0mm (0.004 to 0.26in).
The Concrete Crack Comparator Card is a handy, credit card-sized field reference tool. It is inexpensive and fits easily in a pocket or wallet, and is constructed of durable plastic and marked in inch and metric measurements. View our full line of Concrete Crack Monitors.
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