The crack width gauge is designed specifically to measure widths and locations of cracks prior to beginning a monitoring program.
The crack width gauge is suitable for internal and external use. It is made of polycarbonate, which has a co-efficient of linear thermal expansion of 7.0 x 10-5cm/cm/°C for ambient temperatures between -30°C and 30°C.
The scale is calibrated from the end of the gauge to facilitate measuring cracks in corners.
Supplied in protective case. Conforms to BS EN ISO 9001:2000.