Crack Width Gauge, Standard model for monitoring displacements in two directions (top-bottom/ left-right). Simply stick or glue over the crack. Each further displacement will be shown by a movement of the cross hairs over the measuring scale (40 x 20mm). Dimensions 148 x 30 x 6.5mm. Supplied with a reading record sheet (may be photocopied).

Angle Crack Monitoring Gauge , Standard model for monitoring displacements in two directions (top-bottom/ left-right). Simply stick or glue over the crack. Each further displacement will be shown by a movement of the cross hairs over the measuring scale (40 x 20mm). Dimensions 148 x 30 x 6.5mm. price for 2 pcs