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Conversion Charts & Instruments Measuring Guide

Inches cm mm
0.25 0.7 6
0.5 1.3 13
0.75 1.9 19
1 2.5 25
1.25 3.2 32
1.5 3.8 38
1.75 4.4 44
2 5.1 51
2.25 5.7 57
2.5 6.4 64
2.75 7.0 70
3 7.6 76
3.25 8.3 83
3.5 8.9 89
3.75 9.5 95
4 10.2 102
4.25 10.8 108
4.5 11.4 114
4.75 12.1 121
5 12.7 127
5.25 13.3 133
5.5 14.0 140
5.75 14.6 146
6 15.2 152
6.25 15.9 159
6.5 16.5 165
6.75 17.1 171
7 17.8 178
7.25 18.4 184
7.5 19.1 191
7.75 19.7 197
8 20.3 203
8.25 21.0 210
8.5 21.6 216
8.75 22.2 222
9 22.9 229
9.25 23.5 235
9.5 24.1 241
9.75 24.8 248
10 25.4 254
10.25 26.0 260
10.5 26.7 267
10.75 27.3 273
11 27.9 279
11.25 28.6 286
11.5 29.2 292
11.75 29.8 298
12 30.5 305

How to measure surgical instruments click here