Table 1.

Specifications of the TLS used in this research, features referred to vendors documents [22].

	Efficiency
Measurement range	200 m (optimal); 350 m (maximum)
Standard deviation:	1.4 mm £ 50 m; 2.5 mm at 100 m 3.6 mm at 150 m;
Single point accuracy:	6.5 mm at 200 m
Horizontal angular accuracy (deg):	12 mm at 100 m; 7 mm at 50 m
Vertical angular accuracy (deg):	0.0012
Circular level sensibility:	0.0014
Dual-axis compensator sensibility:	8′
Automatic leveling compensation	6
Spot size (beam diameter):	In real time
Spot size with autofocus:	3 mm at 50 m
Laser spot spacing:	0.3 mm at 5 m; 0.9 mm at 15 m; 1.5 mm at 25 m
	3.2 mm at 100 m
System specifications
Type of laser:	532 nm. Time of flight. Green spot.
Class:	IEC 60825-1Clase 3R; 21 CFR-1041.10: Class 2
Field of view:	360° × 60°
Video camera	Digital image in real time with 5.5 × optic zoom
Beam deflection system	Oscillating mirror