Correction: García-Balboa, J.L., et al. A Field Procedure for the Assessment of the Centring Uncertainty of Geodetic and Surveying Instruments. Sensors 2018, 18, 3187

The authors wish to make the following corrections to this paper [1]:

1. Change in Equations

The authors wish to make the following corrections to Equations (4) and (5):

$${\alpha }_i=x_{i,2}-x_{i,1},{\beta }_j=x_{i,3}-x_{i,2}.$$

(4)

$$s_{\alpha }=\frac{{{\displaystyle \sum }}_{j=1}^n\left({\alpha }_j-\overline{\alpha }\right)}{n-1},s_{\beta }=\frac{{{\displaystyle \sum }}_{j=1}^n\left({\beta }_j-\overline{\beta }\right)}{n-1}$$

(5)

should be replaced with

$${\alpha }_i=x_{i,2}-x_{i,1},{\beta }_i=x_{i,3}-x_{i,2}.$$

(4)

$$s_{\alpha }=\sqrt{\frac{{{\displaystyle \sum }}_{i=1}^n{\left({\alpha }_i-\overline{\alpha }\right)}^2}{n-1}},s_{\beta }=\sqrt{\frac{{{\displaystyle \sum }}_{i=1}^n{\left({\beta }_i-\overline{\beta }\right)}^2}{n-1}}$$

(5)

The authors would like to apologize for any inconvenience caused to the readers by these changes.