A practical hybrid approach to the problem of surveying a working historical bell considering innovative measurement methods

Heritage Science

Table 1 Comparison of the results of volume measurements for the outer and inner surface of the bell

No.	Volume measurement − total station		Volume measurement − TLS
No.	Outer surface [m³]	Inner surface [m³]	Outer surface [m³]	Inner surface [m³]
1	1.040	0.839	1.046	0.826
2	1.057	0.831	1.051	0.834
3	1.043	0.833	1.040	0.836
4	1.054	0.826	1.044	0.831
5	1.052	0.824	1.047	0.828
6	1.043	0.835	1.039	0.826
Average value	1.048	0.831	1.045	0.830
Standard deviation	0.007	0.006	0.005	0.005