3827 moving walls

in the uk,architects/builders use these glass'phials'inserted into suspect walls to test whether they are moving or not-I believe they are called 'tell-tales'or something like that,Does anybody out there know of the Italian equivalent and its Italian name so I can ask my geometra!?

Category
Building/Renovation

[url]http://www.buildingconservation.com/articles/movement/movement.htm[/url]

Is a very interesting short discussion on building movement, worth reading.

I'm afraid I can't find a word for tell-tale in Italian, and the only ones I have seen in italy are the proverbial strips of glass stuck on with cement or resin!
[url]www.avongard.com[/url] make them, and have a good website with pictures of the various models, so you could point your geometra there if you still want to monitor your cracks.