Table 6. Standard deviations of scanners (μm) when scanning A model.

Standard deviation
	Mean	SD	Median	Min	Max
Model A
UP360	10.38	2.04	9.75	8.54	15.39
UP300	19.20	5.66	16.98	13.35	30.35
DWS3	29.49	2.33	28.59	27.15	33.55
D810	6.56	0.61	6.77	5.37	7.21
D2000	9.61	2.25	9.56	6.37	13.21
DOF	4.33	0.81	4.23	3.05	6.15
Identica	9.44	3.99	7.07	6.20	18.42