Allows two points either side of a crack to be accurately monitored over a period of time.
Graduated red and white every 500mm.
Various colours available. The flags consist of a non-toxic lead free grade vinyl which is secured to a 533mm wire stem.
Check for hygroscopic salts contamination - nitrates and chlorides.
These targets work with most EDMs and are ideal for monitoring work where you have to leave targets in position over long periods.
Measure range, slope distance and inclination angle and calculate horizontal distance, vertical distance, height and 2D vertical missing line values.
A range of top quality economical softwood stakes for general survey projects, setting out and building control work on site. Various sizes available.
