Cracks, take the right measures
Table of contents
The major innovation provided by the G1+ gauge resides in its “digital” readout of tenths of mm: indeed, each 1/10 mm movement of the pull tab causes the concomitant obstruction of a row of 6 white lights placed on this same tab. Each row is assigned to a digit (0 to 9) corresponding to the tenths of mm.
By subtracting the first from the second reading, we can infer that the crack has grown by 0.55 mm in a little more than 3 months.
The vernier, located on the top of the pull tab, will confirm these results if necessary (for instructions on reading the vernier, see the G1 gauge product sheet), though it will be necessary to use a thread counter to read the result of 34.15.
Besides its 1/20 mm precision, combined with its ease and comfort of reading, the G1+ gauge also means:
By gluing: the gauge can be fixed easily and fastly using double-sides self-adhesive tabs. It is possible to strengthen the sticking using epoxy glue with rapid hardening in twin syringe.
By mechanical fixation: G1 family gauges are supplied ready drilled with two Ø4 mm holes. These holes facilitate fixing by mechanical means using plugs and screws on difficult structures where self-adhesion and sticking are not possible.
We recommend gluing the gauges to the structure wherever the condition of its surface does not allow the use of self-adhesive tabs.
Result of fixing with anchors and screws:
It is possible to fix the gauge in angle : G1 family gauges are supplied with a foldable plastic angle bar.
We recommend that gauges used in public places -schools, shops, streets – should be protected.
For inside and outside : weather-resistant. Accurate to 1/10th of a mm.
For interior use only, particularly in dry rooms. Accurate to 1/10th of a mm.
Transparent for interior and exterior quality structures. Accurate to 1/10th of a mm.
Protection with anti-UV filter for G1 gauges fixed outside (delivered with impact anchors)
Protection for G1 gauges fixed in the public places (delivered with impact anchors).
Glue rapid hardening in twin syringe
Kit for mechanical fixing to the structure wherever the condition of its surface does not allow the use of self-adhesive tabs (1 drill + 1 screwdriver + 30 impact anchors)
Impact anchors pack for mechanical fixing to the structure wherever the condition of its surface does not allow the use of self-adhesive tabs (pack of 50 units)
For measuring the variation in a crack in a vertical or horizontal internal angle (with self-adhesive tabs and 1 impact anchor).