Cracks, take the right measures
Table of content
By gluing: the gauge can be fixed easily and fastly usin double-sides self-adhesive tabs. It is possible to strengthen the sticking using epoxy glue with rapid hardening in twin syringue.
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 or an aluminium angle bar can be ordered.
We recommend that gauges used in public places -schools, shops, streets – should be protected.
The upper section is graduated in mm from 0 to 30: this is the measurement scale. The lower section moves: this is the 1/10th mm vernier (10 divisions of the vernier correspond to 9 mm on the measurement scale).
Reading a measurement with a decimal (example: gauge G1. N°3):
The pointer of the vernier is between two graduations of the measurement scale. Example: between 13 and 14.
a) Reading the millimeters:
The number of mm corresponds to the graduation to the left of the pointer of the vernier: in this case that is 13.
b) Reading the decimal:
Find the line on the vernier which is exactly opposite a line on the measurement scale. In this example with gauge N°3, graduation 8 on the vernier is in line with graduation 21 on the measurement scale.
Even simpler to read and more accurate: G1+ gauge with “digital” readout.
Example of monitoring the variations in cracksin a construction built on clay ground reacting to variations in water content.
After an observation period which confirmed that the cracks were opening and closing, it was decided to carry out a draining operation and build a walkway around the periphery. The structure stabilized within the six months following the work..
For inside and outside : weather-resistant. Accurate to 1/20th of a mm. With easy ‘digital’ readout.
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).