Posted on September 20, 2011 by mike
2 Comments

I need one of these posters for my shop. From what I hear you can get yours at McMaster or MSC, although I haven’t found a full size one yet. But I did stumble across this book, and it looks good: Home Machinists Handbook
Here’s an online conversion table that can help in a pinch, too.
| Millimeters |
Fractions |
Inches |
| .397 |
1/64 |
.015625 |
| .794 |
1/32 |
.03125 |
| 1.191 |
3/64 |
.046875 |
| 1.588 |
1/16 |
.0625 |
| 1.984 |
5/64 |
.078125 |
| 2.381 |
3/32 |
.09375 |
| 2.778 |
7/64 |
.109375 |
| 3.175 |
1/8 |
.125 |
| 3.572 |
9/64 |
.140625 |
| 3.969 |
5/32 |
.15625 |
| 4.366 |
11/64 |
.171875 |
| 4.762 |
3/16 |
.1875 |
| 5.159 |
13/64 |
.203125 |
| 5.556 |
7/32 |
.21875 |
| 5.953 |
15/64 |
.234375 |
| 6.350 |
1/4 |
.25 |
| 6.747 |
17/64 |
.265625 |
| 7.144 |
9/32 |
.28125 |
| 7.541 |
19/64 |
.296875 |
| 7.938 |
5/16 |
.3125 |
| 8.334 |
21/64 |
.328125 |
| 8.731 |
11/32 |
.34375 |
| 9.128 |
23/64 |
.359375 |
| 9.525 |
3/8 |
.375 |
| 9.922 |
25/64 |
.390625 |
| 10.319 |
13/32 |
.40625 |
| 10.716 |
27/64 |
.421875 |
| 11.112 |
7/16 |
.4375 |
| 11.509 |
29/64 |
.453125 |
| 11.906 |
15/32 |
.46875 |
| 12.303 |
31/64 |
.484375 |
| 12.700 |
1/2 |
.5 |
|
| Millimeters |
Fractions |
Inches |
| 13.097 |
33/64 |
.515625 |
| 13.494 |
17/32 |
.53125 |
| 13.891 |
35/64 |
.546875 |
| 14.288 |
9/16 |
.5625 |
| 14.684 |
37/64 |
.578125 |
| 15.081 |
19/32 |
.59375 |
| 15.478 |
39/64 |
.609375 |
| 15.875 |
5/8 |
.625 |
| 16.272 |
41/64 |
.640625 |
| 16.669 |
21/32 |
.65625 |
| 17.066 |
43/64 |
.671875 |
| 17.462 |
11/16 |
.6875 |
| 17.859 |
45/64 |
.703125 |
| 18.256 |
23/32 |
.71875 |
| 18.653 |
47/64 |
.734375 |
| 19.050 |
3/4 |
.75 |
| 19.447 |
49/64 |
.765625 |
| 19.844 |
25/32 |
.78125 |
| 20.241 |
51/64 |
.796875 |
| 20.638 |
13/16 |
.8125 |
| 21.034 |
53/64 |
.828125 |
| 21.431 |
27/32 |
.84375 |
| 21.828 |
55/64 |
.859375 |
| 22.225 |
7/8 |
.875 |
| 22.622 |
57/64 |
.890625 |
| 23.019 |
29/32 |
.90625 |
| 23.416 |
59/64 |
.921875 |
| 23.812 |
15/16 |
.9375 |
| 24.209 |
61/64 |
.953125 |
| 24.606 |
31/32 |
.96875 |
| 25.003 |
63/64 |
.984375 |
| 25.400 |
1 |
1.000 |
|