| Number of Wire Gauge. | American or Brown & Sharpe. | Birming- ham, or Stubs’ Wire. | Washburn & Moen Mfg. Co., Worces- ter, Ms. | Impe- rial Wire Gauge. | Stubs’ Steel Wire. | U. S. Stand. for Plate. | Number of Wire Gauge. |
|---|---|---|---|---|---|---|---|
| 000000 | .... | .... | .... | .464 | .... | .46875 | 000000 |
| 00000 | .... | .... | .... | .432 | .... | .4375 | 00000 |
| 0000 | .46 | .454 | .3938 | .400 | .... | .40625 | 0000 |
| 000 | .40964 | .425 | .3625 | .372 | .... | .375 | 000 |
| 00 | .3648 | .38 | .3310 | .348 | .... | .34375 | 00 |
| 0 | .32486 | .34 | .3065 | .324 | .... | .3125 | 0 |
| 1 | .2893 | .3 | .2830 | .300 | .227 | .28125 | 1 |
| 2 | .25763 | .284 | .2625 | .276 | .219 | .265625 | 2 |
| 3 | .22942 | .259 | .2437 | .252 | .212 | .25 | 3 |
| 4 | .20431 | .238 | .2253 | .232 | .207 | .234375 | 4 |
| 5 | .18194 | .22 | .2070 | .212 | .204 | .21875 | 5 |
| 6 | .16202 | .203 | .1920 | .192 | .201 | .203125 | 6 |
| 7 | .14428 | .18 | .1770 | .176 | .199 | .1875 | 7 |
| 8 | .12849 | .165 | .1620 | .160 | .197 | .171875 | 8 |
| 9 | .11443 | .148 | .1483 | .144 | .194 | .15625 | 9 |
| 10 | .10189 | .134 | .1350 | .128 | .191 | .140625 | 10 |
| 11 | .090742 | .12 | .1205 | .116 | .188 | .125 | 11 |
| 12 | .080808 | .109 | .1055 | .104 | .185 | .109375 | 12 |
| 13 | .071961 | .095 | .0915 | .092 | .182 | .09375 | 13 |
| 14 | .064084 | .083 | .0800 | .080 | .180 | .078125 | 14 |
| 15 | .057068 | .072 | .0720 | .072 | .178 | .0703125 | 15 |
| 16 | .05082 | .065 | .0625 | .064 | .175 | .0625 | 16 |
| 17 | .045257 | .058 | .0540 | .056 | .172 | .05625 | 17 |
| 18 | .040303 | .049 | .0475 | .048 | .168 | .05 | 18 |
| 19 | .03589 | .042 | .0410 | .040 | .164 | .04375 | 19 |
| 20 | .031961 | .035 | .0348 | .036 | .161 | .0375 | 20 |
| 21 | .028462 | .032 | .03175 | .032 | .157 | .034375 | 21 |
| 22 | .025347 | .028 | .0286 | .028 | .155 | .03125 | 22 |
| 23 | .022571 | .025 | .0258 | .024 | .153 | .028125 | 23 |
| 24 | .0201 | .022 | .0230 | .022 | .151 | .025 | 24 |
| 25 | .0179 | .02 | .0204 | .020 | .148 | .021875 | 25 |
| 26 | .01594 | .018 | .0181 | .018 | .146 | .01875 | 26 |
| 27 | .014195 | .016 | .0173 | .0164 | .143 | .0171875 | 27 |
| 28 | .012641 | .014 | .0162 | .0149 | .139 | .015625 | 28 |
| 29 | .011257 | .013 | .0150 | .0136 | .134 | .0140625 | 29 |
| 30 | .010025 | .012 | .0140 | .0124 | .127 | .0125 | 30 |
| 31 | .008928 | .01 | .0132 | .0116 | .120 | .0109375 | 31 |
| 32 | .00795 | .009 | .0128 | .0108 | .115 | .01015625 | 32 |
| 33 | .00708 | .008 | .0118 | .0100 | .112 | .009375 | 33 |
| 34 | .006304 | .007 | .0104 | .0092 | .110 | .00859375 | 34 |
| 35 | .005614 | .005 | .0095 | .0084 | .108 | .0078125 | 35 |
| 36 | .005 | .004 | .0090 | .0076 | .106 | .00703125 | 36 |
| 37 | .004453 | .... | .... | .0068 | .103 | .006640625 | 37 |
| 38 | .003965 | .... | .... | .0060 | .101 | .00625 | 38 |
| 39 | .003531 | .... | .... | .0052 | .099 | .... | 39 |
| 40 | .003144 | .... | .... | .0048 | .097 | .... | 40 |
UNITED STATES STANDARD SIZES OF BOLTS.
| DIAM- ETER. | Distance Across Flats, Square and Hex. | Distance Across Corners, Hex. | Thickness of Head. | ||||
|---|---|---|---|---|---|---|---|
| 1⁄4″ | 1⁄2″ | 9⁄16″ | 1⁄4″ | ||||
| 3⁄8 | 11⁄16 | 25⁄32 | 11⁄32 | ||||
| 1⁄2 | 7⁄8 | 1 | 7⁄16 | ||||
| 5⁄8 | 1 | 1⁄16 | 1 | 7⁄32 | 17⁄32 | ||
| 3⁄4 | 1 | 1⁄4 | 1 | 7⁄16 | 5⁄8 | ||
| 7⁄8 | 1 | 7⁄16 | 1 | 21⁄32 | 21⁄32 | ||
| 1 | 1 | 5⁄8 | 1 | 7⁄8 | 13⁄16 | ||
| 1 | 1⁄8 | 1 | 13⁄16 | 2 | 3⁄32 | 29⁄32 | |
| 1 | 1⁄4 | 2 | 2 | 5⁄16 | 1 | ||
| 1 | 3⁄8 | 2 | 3⁄16 | 2 | 1⁄2 | 1 | 3⁄32 |
| 1 | 1⁄2 | 2 | 3⁄8 | 2 | 3⁄4 | 1 | 3⁄16 |
| 1 | 5⁄8 | 2 | 9⁄16 | 2 | 15⁄16 | 1 | 9⁄32 |
| 1 | 3⁄4 | 2 | 3⁄4 | 3 | 3⁄16 | 1 | 3⁄8 |
| 1 | 7⁄8 | 2 | 15⁄16 | 3 | 13⁄32 | 1 | 15⁄32 |
| 2 | 3 | 1⁄8 | 3 | 5⁄8 | 1 | 9⁄16 | |
| 2 | 1⁄4 | 3 | 1⁄2 | 4 | 1⁄16 | 1 | 3⁄4 |
| 2 | 1⁄2 | 3 | 7⁄8 | 4 | 1⁄2 | 1 | 15⁄16 |
| 2 | 3⁄4 | 4 | 1⁄4 | 4 | 7⁄8 | 2 | 1⁄8 |
| 3 | 4 | 5⁄8 | 5 | 11⁄32 | 2 | 5⁄16 | |
UNITED STATES STANDARD SCREW THREAD GAUGE.
Fig. 316.
Some Things Personal.
In the preparation of this work the idea of self-help has never been forgotten; nothing has been held back or omitted which would, in the author’s opinion, tend to advance the student in the draughtsman’s art.
The volume contains the experience in practical drawing, as related to engineering and mechanics, of over one hundred years, i. e., the author’s, Mr. Perrott’s and Mr. Lucas’ experiences added together exceed that period.
Hence, the work should be really helpful; it has been aimed also to be entertaining and with easy tasks; all the illustrations of the book are recommended as models for practice—they have been selected with that view.