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 centimeter measurements. View our full line of Concrete Crack Monitors.

Features:

Compact size, good for field use
Measures in inch and metric

Included Items:

Crack Comparator Card

Related blogs:

Non-Destructive Testing of Concrete: An Equipment Guide
Concrete Cracking: Evaluating Width, Depth & Movement

Specifications

Attribute name	Attribute value
Estimated Shipping Weight	1.0lb (0.45kg)

Product Q&A

Q: How are longer specimens extracted and the piston returned?

Specimens longer than 5in are extracted by repositioning the Adapter Ring after maximum piston travel, and the spring-loaded piston automatically returns to the start position when the release valve is opened.