## 5 Conclusions
For RSm, the threshold value was exceeded at a speed of 1 mm/s, while at a speed of 2 mm/s, the determination error was \(-12\%\). Other parameters turned out to be much less sensitive to the increase in tracing speed. However, it was shown that at themaximum speed, the error value exceeded the threshold of 2% for all parameters, except Rp, Rz, Rc, and Rt. 4. The surface engineered via flat lapping. In the case of the surface engineered using flat lapping, the roughness parameters proved to be very sensitive to the increase in tracing speed. At a speed of \(v=0.25\) mm/s, the error of determining six parameters exceeded the threshold value. At a speed of \(v=0.5\) mm/s, the errors of only two parameters did not exceed 2%, and at \(v=1\) mm/s, only the RSm parameter remained within the allowed limits. At a speed of \(v=2\) mm/s, the error of each of the parameters exceeded the threshold value, in many cases very significantly. For example, for the Rp and R\(\Lambda\)q parameters, the error was greater than 100%. 5. The surface engineered via turning. In the case of turned surface, the roughness parameters were found to be moderately sensitive to an increase in tracing speed. Errors in the determination of roughness parameters exceeded the threshold value of 2% at speed \(v=0.5\) mm/s for two parameters: Rt and R\(\Lambda\)q. At speed \(v=1\) mm/s the threshold value was exceeded for five parameters. At speed \(v=2\) mm/s The error of each of the parameters exceeded the threshold value. In the case of Rqd, the error was very significant and reached 71%. 6. Surfaces engineered via grinding. In the case of ground surfaces, the roughness parameters tend to be more sensitive to the increase in the tracing speed, particularly for surfaces with smaller irregularities. In the case of the G 0.4 standard, it was observed that at the speed of \(v=0.25\) mm/s, the error threshold for the Rsk parameter was exceeded. With an increase in speed to \(v=0.5\) mm/s, the threshold value was exceeded for six parameters, with nine parameters exceeded the threshold at \(v=1\) mm/s. At the maximum speed of \(v=2\) mm/s, errors of all parameters exceeded the threshold value, with some parameters exhibiting a very significant exceedance. For example, for Rp the error was 81.5%, and for R\(\Lambda\)q, it was more than 116%. In the case of two consecutive ground standards at a speed of \(v=0.25\) mm/s, the error threshold for one of the parameters was exceeded. With a further increase in speed to the value of \(v=0.5\) mm/s, the error rate exceeded 2% for three parameters in the case of the standard G 0.8, and for two parameters in the case of the standard G 1.6. At a speed of \(v=1\) mm/s, the threshold value was exceeded for five parameters for G 0.8 and six parameters for G 1.6. The maximum speed of \(v=2\) mm/s resulted in all parameters exceeding the threshold value. The highest errors were obtained in the case of the Rp, RSm, and R\(\Lambda\)q parameters. For R\(\Lambda\)q, the errors exceeded 80%. Summarizing the analysis of the results obtained for individual standards, it can be stated that the possibility of increasing the tracing speed in the roughness measurement using the tactile method depends on the shape of irregularities of the measured surface and what roughness parameters are to be observed. On the basis of the obtained results, one can conclude that:  
1. High values of the tracing speed, e.g., 1 mm/s or 1.5 mm/s, can be used for periodic profiles, such as milled and turned surfaces, when vertical and amplitude parameters are observed (e.g., Ra, Rq, etc.). 2. For random surfaces, low values of the tracing speed should be used (0.1 mm/s or 0.25 mm/s), especially for smooth surfaces. 3. If the object of interest is the R\(\Lambda\)q parameter, we should avoid increasing the tracing speed, regardless of whether the surface is periodic or random. 4. Care must also be taken with the RSm parameter when increasing the tracing speed. However, this parameter is much less sensitive to an increase in tracing speed than R\(\Lambda\)q.