B&S
Guage |
Inches |
MM |
|
B&S
Guage |
Inches |
MM |
|
1 |
.28930 |
7.348 |
|
21 |
.02846 |
0.723 |
|
2 |
.25763 |
6.543 |
|
22 |
.02534 |
0.644 |
|
3 |
.22942 |
5.827 |
|
23 |
.02257 |
0.573 |
|
4 |
.20431 |
5.189 |
|
24 |
.02010 |
0.511 |
|
5 |
.18194 |
4.621 |
|
25 |
.01790 |
0.455 |
|
6 |
.16202 |
4.115 |
|
26 |
.01594 |
0.405 |
|
7 |
.14428 |
3.665 |
|
27 |
.01419 |
0.360 |
|
8 |
.12489 |
3.264 |
|
28 |
.01264 |
0.321 |
|
9 |
.11443 |
2.906 |
|
29 |
.01125 |
0.286 |
|
10 |
.10189 |
2.588 |
|
30 |
.01002 |
0.255 |
|
11 |
.09074 |
2.305 |
|
31 |
.00892 |
0.226 |
|
12 |
.08080 |
2.052 |
|
32 |
.00795 |
0.202 |
|
13 |
.07196 |
1.828 |
|
33 |
.00708 |
0.180 |
|
14 |
.06408 |
1.628 |
|
34 |
.00630 |
0.160 |
|
15 |
.05706 |
1.449 |
|
35 |
.00561 |
0.142 |
|
16 |
.05082 |
1.291 |
|
36 |
.00500 |
0.127 |
|
17 |
.04525 |
1.149 |
|
37 |
.00445 |
0.113 |
|
18 |
.04030 |
1.024 |
|
38 |
.00396 |
0.100 |
|
19 |
.03589 |
0.912 |
|
39 |
.00353 |
0.090 |
|
20 |
.03196 |
0.812 |
|
40 |
.00314 |
0.080 |
| Other
Useful Conversions |
1 T.O. = 20 DWT
1 T.O. = 31.103 Grams
1 DWT = 1.555 Grams |
1 DWT = 7.776 Carats
1 Gram = 5.0 Carats
1 Pound Avoir = 14.583 T.O. |
Square Inches from MM sizes:
18 MM x x75 MM - Multiply 18 x 75, Divide by 625.
Equals 2.16 Square Inches. |
|
If you need to convert grams to dwt. -
here's how. |
| |
Divide the Grams by 1.555 to get DWT's. |
| |
If you need to convert DWT's to Grams -
multiply the DWT's by 1.555 to get Grams |
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