Crack Gauge Monitor Crack Monitor with Updated Two Fixed adapter Crack Measure and Record Instrument for Monitoring Wall Deformation and Crack (Pack of 3)

High-quality Material: Made of high-quality acrylic material, our Crack Gauge Monitor is durable, sturdy, smooth, wear-resistant, and not easy to break. Crack Monitor is designed with a highly clear acrylic sheet and an easy-to-read measurement grid, which makes it clear and precise.
Easy for Using: Fixed with two adapters first, then simply stick or glue over the crack first and make sure the crack center crosshair alignment, and then fasten it to the wall with screws and expansion screws.
Creative updated fixed ways: Updated added two fixed adapters, so you can fix it with one hand. You can use our Corner Crack Monitor to monitor the horizontal or vertical movement of cracks on a plane. It is a precision instrument.
Best Accuracy:
Vertical: Measurement ±1 mm (± 0.04" ) tick marks on X-Y axes; ± 0.5 mm (± 0.02" ) discrimination.
Horizontal Measurement: ±20 mm (± 0.79" ) horizontal and ±10 mm (± 0.38" ) vertical range.
Concrete Crack Monitors: The Standard Crack Monitors displacement will be shown by a movement of the cross hairs over the measuring scale (40 x 20 mm). The standard model for monitoring displacements in two directions (top-bottom/left-right)