Table 1.

Calibration of the different mechanical probes^{^a}

Measurement no.	Mechanical probes (P)
Measurement no.	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10
1	0.14	0.16	0.16	0.27	0.40	0.55	1.80	4.92	7.00	17.36
2	0.14	0.16	0.18	0.27	0.40	0.55	1.90	5.10	7.20	17.40
3	0.14	0.16	0.19	0.27	0.40	0.58	1.92	4.94	7.22	16.46
4	0.13	0.15	0.19	0.26	0.41	0.57	1.87	4.86	7.20	17.00
5	0.13	0.16	0.18	0.26	0.39	0.55	1.90	5.00	6.99	16.90
6	0.14	0.16	0.18	0.26	0.40	0.57	1.88	4.81	7.20	16.90
7	0.14	0.15	0.18	0.27	0.40	0.56	1.89	4.99	7.01	17.40
8	0.13	0.15	0.17	0.26	0.40	0.57	1.85	4.95	7.04	17.42
9	0.14	0.16	0.17	0.26	0.39	0.58	1.92	4.91	6.99	16.53
10	0.14	0.16	0.18	0.26	0.40	0.55	1.91	5.05	7.33	17.00
Average mass (g)	0.14	0.16	0.18	0.26	0.40	0.56	1.88	4.95	7.12	17.04
SD	0.005	0.005	0.009	0.005	0.006	0.013	0.037	0.086	0.125	0.357
Force (mN)	1.37	1.57	1.76	2.55	3.92	5.49	18.42	48.51	69.78	166.99
Pressure (kPa)	175	200	224	325	499	699	2346	2746	3951	5318

↵^aCalibration and forces/pressures produced by the different mechanical probes. Each mechanical probe was measured 10 times, and the average mass (in grams) is reported. The forces are converted to millinewtons (mN), and to pressure in kilopascals (kPa) based upon the diameter of the wire tip. The wire diameters of the different mechanical probes were as follows: P1–P7 = 0.01 cm; P8–P9 = 0.015 cm; P10 = 0.02 cm.