Each type of need has its own crack monitor

Here’s an overview of our products and their features. If necessary, you’ll find more details on how to make your choice in the information sheet Choosing your crack monitor according to the type of crack or movement. You also download the concise documentation featuring the main products.

Product	Purpose	Monitoring	Monitoring type	Reading	Range	Resolution
G1 gauge	Monitors crack development indoors and outdoors	1 axis	Opening	Manual	20 mm	0.1 mm
G1+ gauge	Monitors crack development indoors and outdoors with simplified direct reading	1 axis	Opening	Manual	30 mm	0.05 mm
E1 gauge	Monitors crack development with a removable digital gauge and transparent mounting plates	1 axis, 2 axes	Opening, Shear	Manual	25 mm	0.01 mm
R1 gauge	Remotely monitors crack development with 3 connected sensors	1 axis, 2 axes, 3 axes	Opening, Shear, Misalignment	Automatic	23 mm	0.01 mm – 0.1°C – 1% RH
R2 gauge	Remote monitoring with large-range external sensor	1 axis	Opening	Automatic	100 mm	0.01 mm – 0.1°C – 1% RH
G1.1 gauge	Monitors crack development indoors only	1 axis	Opening	Manual	20 mm	0.1 mm
G1.2 gauge	Monitors crack development more discreetly thanks to its transparent design	1 axis	Opening	Manual	20 mm	0.1 mm
G1.3 gauge	Monitors crack development with amplitudes of several centimetres (up to 17 cm) or widely spaced fixing points (up to 25 cm)	1 axis	Opening	Manual	170 mm	0.1 mm
G1.5 gauge	Monitors crack development with a stainless carbon gauge	1 axis	Opening	Manual	45 mm	0.02 mm
G2 gauge	Monitors and graphically records the maximum and minimum crack development	1 axis	Opening	Manual	25 mm	0.1 mm
G3 gauge	Measures a vertical or horizontal differential settlement, slab cracking, or sagging of a ceiling, beam or floor	1 axis	Misalignment	Manual	35 mm	0.1 mm
G6 gauge	Monitors both the opening and shear movement of a crack	2 axes	Opening, Shear	Manual	20 mm	0.1 mm
R5 gauge	Remotely monitors the development of a tilt or overturning movement	1 angle, 2 angles	Tilt	Automatic	+/- 45°	0.005° – 0.1°C – 1% RH
G5 gauge	Monitors the development of a tilt or overturning movement	1 angle	Tilt	Manual	+/- 10°	0.03°
3Dim gauge	Monitors any type of deformation in all three dimensions	3 axes	Opening, Shear, Misalignment	Manual	300 mm – 360° – 60°	0.1 mm / 0.2°
G130 gauge	Monitors the development of a beam deflection or structural sag	1 axis	Deflection	Manual	35 mm	0.1 mm
G20 extensometer	Mechanically monitors the change in distance between two widely spaced points	1 axis	Distance between 2 remote points	Manual	25 mm	0.1 mm
Enhanced crack ruler	Measures crack width by direct reading or via the app	Width	Crack width	Manual	40 mm	0.1 mm
Triangular gauge	Measures the gap between two objects or the width of a hole or crack	Width	Crack width	Manual	15 mm	0.1 mm
Vitrometer	Measures single and double glazing	Thickness	Glass thickness	Manual	22 mm	1 mm