Self-Help Mechanical Drawing: An Educational Treatise

by N. Hawkins

LONG MEASURE—MEASURES OF LENGTH.

12		inches	=	1 foot.
3		feet	=	1 yard.
5	1⁄2	yards	=	1 rod.
40		rods	=	1 furlong.
8		furlongs	=	1 common mile.
3		miles	=	1 league.

The mile (5,280 feet) of the above table is the legal mile of the United States and England, and is called the statute mile.

Tables of Diameters, Circumferences and Areas of Circles.

Diam.	Area.		Circum.
0.0
.1		.007854		.31416
.2		.031416		.62832
.3		.070686		.94248
.4		.12566	1	.2566
.5		.19735	1	.5708
.6		.28274	1	.8850
.7		.38485	2	.1991
.8		.50266	2	.5133
.9		.63617	2	.8274
1.0		.7854	3	.1416
.1		.9503	3	.4558
.2	1	.1310	3	.7699
.3	1	.3273	4	.0841
.4	1	.5394	4	.3982
.5	1	.7671	4	.7124
.6	2	.0106	5	.0265
.7	2	.2698	5	.3407
.8	2	.5447	5	.6549
.9	2	.8353	5	.9690
2.0	3	.1416	6	.2832
.1	3	.4636	6	.5973
.2	3	.8013	6	.9115
.3	4	.1548	7	.2257
.4	4	.5239	7	.5398
.5	4	.9087	7	.8540
.6	5	.3093	8	.1681
.7	5	.7256	8	.4823
.8	6	.1575	8	.7965
.9	6	.6052	9	.1106
3.0	7	.0686	9	.4248
.1	7	.5477	9	.7389
.2	8	.0425	10	.0531
.3	8	.5530	10	.3673
.4	9	.0792	10	.6814
.5	9	.6211	10	.9956
.6	10	.1788	11	.3097
.7	10	.7521	11	.6239
.8	11	.3411	11	.9381
.9	11	.9456	12	.2522
4.0	12	.5664	12	.5664
.1	13	.2025	12	.8805
.2	13	.8544	13	.1947
.3	14	.5220	13	.5088
.4	15	.2053	13	.8230
.5	15	.9043	14	.1372
.6	16	.6190	14	.4513
.7	17	.3494	14	.7655
.8	18	.0956	15	.0796
.9	18	.8574	15	.3938
5.0	19	.6350	15	.7080
.1	20	.4282	16	.0221
.2	21	.2372	16	.3363
.3	22	.0618	16	.6504
.4	22	.9022	16	.9646
.5	23	.7583	17	.2788
.6	24	.6301	17	.5929
.7	25	.5176	17	.9071
.8	26	.4208	18	.2212
.9	27	.3397	18	.5354
6.0	28	.2743	18	.8496
.1	29	.2247	19	.1637
.2	30	.1907	19	.4779
.3	31	.1725	19	.7920
.4	32	.1699	20	.1062
.5	33	.1831	20	.4204
.6	34	.2119	20	.7345
.7	35	.2565	21	.0487
.8	36	.3168	21	.3628
.9	37	.3928	21	.6770
7.0	38	.4845	21	.9911
.1	39	.5919	22	.3053
.2	40	.7150	22	.6195
.3	41	.8539	22	.9336
.4	43	.0084	23	.2478
.5	44	.1786	23	.5619
.6	45	.3646	23	.8761
.7	46	.5663	24	.1903
.8	47	.7836	24	.5044
.9	49	.0167	24	.8186
8.0	50	.2655	25	.1327
.1	51	.5300	25	.4469
.2	52	.8102	25	.7611
.3	54	.1061	26	.0752
.4	55	.4177	26	.3894
.5	56	.7450	26	.7035
.6	58	.0880	27	.0177
.7	59	.4468	27	.3319
.8	60	.8212	27	.6460
.9	62	.2114	27	.9602
9.0	63	.6173	28	.2743
.1	65	.0388	28	.5885
.2	66	.4761	28	.9027
.3	67	.9291	29	.2168
.4	69	.3978	29	.5310
.5	70	.8822	29	.8451
.6	72	.3823	30	.1593
.7	73	.8981	30	.4734
.8	75	.4296	30	.7876
.9	76	.9769	31	.1018
10.0	78	.5398	31	.4159
.1	80	.1185	31	.7301
.2	81	.7128	32	.0442
.3	83	.3229	32	.3584
.4	84	.9487	32	.6726
.5	86	.5901	32	.9887
.6	88	.2473	33	.3009
.7	89	.9202	33	.6150
.8	91	.6088	33	.9292
.9	93	.3132	34	.2434
11.0	95	.0332	34	.5575
.1	96	.7689	34	.8717
.2	98	.5203	35	.1858
.3	100	.2875	35	.5000
.4	102	.0703	35	.8142
.5	103	.8689	36	.1283
.6	105	.6832	36	.4425
.7	107	.5132	36	.7566
.8	109	.3588	37	.0708
.9	111	.2202	37	.3850
12.0	113	.0973	37	.6991
.1	114	.9901	38	.0133
.2	116	.8987	38	.3274
.3	118	.8229	38	.6416
.4	120	.7628	38	.9557
.5	122	.7185	39	.2099
.6	124	.6898	39	.6841
.7	126	.6769	39	.8982
.8	128	.6796	40	.2121
.9	130	.6981	40	.5265
13.0	132	.7323	40	.8407
.1	134	.7822	41	.1549
.2	136	.8478	41	.4690
.3	138	.9291	41	.7832
.4	141	.0261	42	.0973
.5	143	.1388	42	.4116
.6	145	.2672	42	.7257
.7	147	.4114	43	.0398
.8	149	.5712	43	.3540
.9	151	.7468	43	.6681
14.0	153	.9380	43	.9823
.1	156	.1450	44	.2965
.2	158	.3677	44	.6106
.3	160	.6061	44	.9248
.4	162	.8602	45	.2389
.5	165	.1300	45	.5531
.6	167	.4155	45	.8673
.7	169	.7167	46	.1814
.8	172	.0336	46	.4956
.9	174	.3662	46	.8097
15.0	176	.7146	47	.1239
.1	179	.0786	47	.4380
.2	181	.4584	47	.7522
.3	183	.8539	48	.0664
.4	186	.2650	48	.3805
.5	188	.6919	48	.6947
.6	191	.1345	49	.0088
.7	193	.5928	49	.3230
.8	196	.0668	49	.6372
.9	198	.5565	49	.9513
16.0	201	.0619	50	.2655
.1	203	.5831	50	.5796
.2	206	.1199	50	.8938
.3	208	.6724	51	.2080
.4	211	.2407	51	.5221
.5	213	.8246	51	.8363
.6	216	.4243	52	.1504
.7	219	.0397	52	.4646
.8	221	.6708	52	.7788
.9	224	.3176	53	.0929
17.0	226	.9801	53	.4071
.1	229	.6583	53	.7212
.2	232	.3522	54	.0354
.3	235	.0618	54	.3496
.4	237	.7871	54	.6637
.5	240	.5282	54	.9779
.6	243	.2849	55	.2920
.7	246	.0574	55	.6062
.8	248	.8456	55	.9203
.9	251	.6494	56	.2345
18.0	254	.4690	56	.5486
.1	257	.3043	56	.8628
.2	260	.1553	57	.1770
.3	263	.0220	57	.4911
.4	265	.9044	57	.8053
.5	268	.8025	58	.1195
.6	271	.7164	58	.4336
.7	274	.6459	58	.7478
.8	277	.5911	59	.0619
.9	280	.5521	59	.3761
19.0	283	.5287	59	.6903
.1	286	.5211	60	.0044
.2	289	.5292	60	.3186
.3	292	.5530	60	.6327
.4	295	.5925	60	.9469
.5	298	.6477	61	.2611
.6	301	.7186	61	.5752
.7	304	.8052	61	.8894
.8	307	.9075	62	.2035
.9	311	.0255	62	.5177
20.0	314	.1593	62	.8319
.1	317	.3087	63	.1460
.2	320	.4739	63	.4602
.3	323	.6547	63	.7743
.4	326	.8513	64	.0885
.5	330	.0636	64	.4026
.6	333	.2916	64	.7168
.7	336	.5353	65	.0310
.8	339	.7947	65	.3451
.9	343	.0698	65	.6593
21.0	346	.3606	65	.9734
.1	349	.6671	66	.2876
.2	352	.9894	66	.6018
.3	356	.3273	66	.9159
.4	359	.6809	67	.2301
.5	363	.0503	67	.5442
.6	266	.4354	67	.8584
.7	369	.8361	68	.1726
.8	373	.2526	68	.4867
.9	376	.6848	68	.8009
22.0	380	.1327	69	.1150
.1	383	.5963	69	.4292
.2	387	.0756	69	.7434
.3	390	.5707	70	.0575
.4	394	.0814	70	.3717
.5	397	.6078	70	.6858
.6	401	.1500	71	.0000
.7	404	.7078	71	.3142
.8	408	.2814	71	.6283
.9	411	.8707	71	.9425
23.0	415	.4756	72	.2566
.1	419	.0993	72	.5708
.2	422	.7327	72	.8849
.3	426	.3848	73	.1991
.4	430	.0526	73	.5133
.5	433	.7361	73	.8274
.6	437	.4354	74	.1416
.7	441	.1503	74	.4557
.8	444	.8809	74	.7699
.9	448	.6273	75	.0841
24.0	452	.3893	75	.3982
.1	456	.1671	75	.7424
.2	459	.9606	76	.0265
.3	463	.7693	76	.3407
.4	467	.5947	76	.6549
.5	471	.4352	76	.9690
.6	475	.2916	77	.2832
.7	479	.1636	77	.5973
.8	483	.0513	77	.9115
.9	486	.9547	78	.2257
25.0	490	.8739	78	.5398
.1	494	.8087	78	.8540
.2	498	.7592	79	.1681
.3	502	.7255	79	.4823
.4	506	.7075	79	.7965
.5	510	.7052	80	.1106
.6	514	.7185	80	.4248
.7	518	.7476	80	.7389
.8	522	.7924	81	.0531
.9	526	.8529	81	.3672
26.0	530	.9292	81	.6814
.1	535	.0211	81	.9956
.2	539	.1287	82	.3097
.3	543	.2521	82	.6239
.4	547	.3911	82	.9380
.5	551	.5459	83	.2522
.6	555	.7163	83	.5664
.7	559	.9025	83	.8805
.8	564	.1044	84	.1947
.9	568	.3220	84	.5088
27.0	572	.5553	84	.8230
.1	576	.8043	85	.1372
.2	581	.0690	85	.4513
.3	585	.3494	85	.7655
.4	589	.6455	86	.0796
.5	593	.9574	86	.3938
.6	598	.2849	86	.7080
.7	602	.6282	87	.0221
.8	606	.9871	87	.3363
.9	611	.3618	87	.6504
28.0	615	.7522	87	.9646
.1	620	.1582	88	.2788
.2	624	.5800	88	.5929
.3	629	.0175	88	.9071
.4	633	.4707	89	.2212
.5	637	.9397	89	.5354
.6	642	.4243	89	.8495
.7	646	.9246	90	.1637
.8	651	.4407	90	.4779
.9	655	.9724	90	.7920
29.0	660	.5199	91	.1063
.1	665	.0830	91	.4203
.2	669	.6619	91	.7345
.3	674	.2565	92	.0487
.4	678	.8668	92	.3628
.5	683	.4928	92	.6770
.6	688	.1345	92	.9911
.7	692	.7919	93	.3053
.8	697	.4650	93	.6195
.9	702	.1538	93	.9336
30.0	706	.8583	94	.2478
.1	711	.5786	94	.5610
.2	716	.3145	94	.8761
.3	721	.0662	95	.1903
.4	725	.8336	95	.5044
.5	730	.6167	95	.8186
.6	735	.4154	96	.1327
.7	740	.2299	96	.4469
.8	745	.0601	96	.7611
.9	749	.9060	97	.0752
31.0	754	.7676	97	.3894
.1	759	.6450	97	.7035
.2	761	.5380	98	.0177
.3	769	.4467	98	.3319
.4	774	.3712	98	.6460
.5	779	.3113	98	.9602
.6	784	.2672	99	.2743
.7	789	.2388	99	.5885
.8	794	.2260	99	.9026
.9	799	.2290	100	.2168
32.0	804	.2477	100	.5310
.1	809	.2821	100	.8451
.2	814	.3322	101	.1593
.3	819	.3980	101	.4734
.4	824	.4796	101	.7876
.5	829	.5768	102	.1018
.6	834	.6898	102	.4159
.7	839	.8185	102	.7301
.8	844	.9628	103	.0442
.9	850	.1229	103	.3584
33.0	855	.2986	103	.6726
.1	860	.4902	103	.9867
.2	865	.6973	104	.3009
.3	870	.9202	104	.6150
.4	876	.1588	104	.9292
.5	881	.4131	105	.2434
.6	886	.6831	105	.5575
.7	891	.9688	105	.8717
.8	897	.2703	106	.1858
.9	902	.5874	106	.5000
34.0	907	.9203	106	.8142
.1	913	.2688	107	.1283
.2	918	.6331	107	.4425
.3	924	.0131	107	.7566
.4	929	.4088	108	.0708
.5	934	.8202	108	.3849
.6	940	.2473	108	.6991
.7	945	.6901	109	.0133
.8	951	.1486	109	.3274
.9	956	.6228	109	.6416
35.0	962	.1128	109	.9557
.1	967	.6184	110	.2699
.2	973	.1397	110	.5841
.3	978	.6768	110	.8982
.4	984	.2296	111	.2124
.5	989	.7980	111	.5265
.6	995	.3822	111	.8407
.7	1000	.9821	112	.1549
.8	1006	.5977	112	.4690
.9	1012	.2290	112	.7832
36.0	1017	.8760	113	.0973
.1	1023	.5387	113	.4115
.2	1029	.2172	113	.7257
.3	1034	.9113	114	.0398
.4	1040	.6212	114	.3540
.5	1046	.3467	114	.6681
.6	1052	.0880	114	.9823
.7	1057	.8449	115	.2965
.8	1063	.6176	115	.6106
.9	1069	.4060	115	.9248
37.0	1075	.2101	116	.2389
.1	1081	.0299	116	.5531
.2	1086	.8654	116	.8672
.3	1093	.7166	117	.1814
.4	1098	.5835	117	.4956
.5	1104	.4662	117	.8097
.6	1110	.3645	118	.1239
.7	1116	.2786	118	.4380
.8	1122	.2083	118	.7522
.9	1128	.1538	119	.0664
38.0	1134	.1149	119	.3805
.1	1140	.0918	119	.6947
.2	1146	.0844	120	.0088
.3	1152	.0927	120	.3230
.4	1158	.1167	120	.6372
.5	1164	.1564	120	.9513
.6	1170	.2118	121	.2655
.7	1176	.2830	121	.5796
.8	1182	.3698	121	.8938
.9	1188	.4724	122	.2080
39.0	1194	.5906	122	.5221
.1	1200	.7246	122	.8363
.2	1206	.8742	123	.1504
.3	1213	.0396	123	.4646
.4	1219	.2207	123	.7788
.5	1225	.4175	124	.0929
.6	1231	.6300	124	.4071
.7	1237	.8582	124	.7212
.8	1244	.1021	125	.0354
.9	1250	.3617	125	.3495
40.0	1256	.6371	125	.6637
.1	1262	.9281	125	.9779
.2	1269	.2348	126	.2920
.3	1275	.5573	126	.6062
.4	1281	.8955	126	.9203
.5	1288	.2493	127	.2345
.6	1294	.3189	127	.5487
.7	1301	.0042	127	.8628
.8	1307	.4052	128	.1770
.9	1313	.8219	128	.4911
41.0	1320	.2543	128	.8053
.1	1326	.7024	129	.1195
.2	1333	.1663	129	.4336
.3	1339	.6458	129	.7478
.4	1346	.1410	130	.0619
.5	1352	.6520	130	.3761
.6	1359	.1786	130	.6903
.7	1365	.7210	131	.0044
.8	1372	.2791	131	.3186
.9	1378	.8529	131	.6227
42.0	1385	.4424	131	.9469
.1	1392	.0476	132	.2611
.2	1398	.6685	132	.5752
.3	1405	.3051	132	.8894
.4	1411	.9574	133	.2035
.5	1418	.6254	133	.5177
.6	1425	.3092	133	.8318
.7	1432	.0086	134	.1460
.8	1438	.7238	134	.4602
.9	1445	.4546	134	.7743
43.0	1452	.2012	135	.0885
.1	1458	.9635	135	.4026
.2	1465	.7415	135	.7168
.3	1472	.5352	136	.0310
.4	1479	.3446	136	.3451
.5	1486	.1697	136	.6593
.6	1493	.0105	136	.9734
.7	1499	.8670	137	.2876
.8	1506	.7393	137	.6018
.9	1513	.6272	137	.9159
44.0	1520	.5308	138	.2301
.1	1527	.4502	138	.5442
.2	1534	.3853	138	.8584
.3	1541	.3360	139	.1726
.4	1548	.3025	139	.4867
.5	1555	.2847	139	.8009
.6	1562	.2826	140	.1153
.7	1569	.2063	140	.4292
.8	1576	.3255	140	.7434
.9	1583	.3706	141	.0575
45.0	1590	.4313	141	.3717
.1	1597	.5077	141	.6858
.2	1604	.5999	142	.0000
.3	1611	.7077	142	.3142
.4	1618	.8313	142	.6283
.5	1625	.9705	142	.9425
.6	1633	.1255	143	.2566
.7	1640	.2962	143	.5708
.8	1647	.4826	143	.8849
.9	1654	.6847	144	.1991
46.0	1661	.9025	144	.5133
.1	1669	.1360	144	.8274
.2	1676	.3853	145	.1416
.3	1683	.6502	145	.4557
.4	1690	.9308	145	.7699
.5	1698	.2272	146	.0841
.6	1705	.5392	146	.3982
.7	1712	.8670	146	.7124
.8	1720	.2105	147	.0265
.9	1727	.5697	147	.3407
47.0	1734	.9445	147	.6550
.1	1742	.3351	147	.9690
.2	1749	.7414	148	.2832
.3	1757	.1635	148	.5973
.4	1764	.6012	148	.9115
.5	1772	.0546	149	.2257
.6	1779	.5237	149	.5398
.7	1787	.0086	149	.8540
.8	1794	.5091	150	.1681
.9	1802	.0254	150	.4823
48.0	1809	.5574	150	.7964
.1	1817	.1050	151	.1105
.2	1824	.6684	151	.4248
.3	1832	.2475	151	.7389
.4	1839	.8423	152	.0531
.5	1847	.4528	152	.3672
.6	1855	.0790	152	.6814
.7	1862	.7210	152	.9956
.8	1870	.3786	153	.3097
.9	1878	.0519	153	.6239
49.0	1885	.7409	153	.9380
.1	1893	.4457	154	.2522
.2	1901	.1662	154	.5664
.3	1908	.9024	154	.8805
.4	1916	.6543	155	.1947
.5	1924	.4218	155	.5088
.6	1932	.2051	155	.8230
.7	1940	.0042	156	.1372
.8	1947	.8189	156	.4513
.9	1955	.6493	156	.7655
50.0	1963	.4954	157	.0796
.1	1971	.3572	157	.3938
.2	1979	.2348	157	.7080
.3	1987	.1280	158	.0221
.4	1995	.0370	158	.3363
.5	2002	.9617	158	.6504
.6	2010	.9020	158	.9646
.7	2018	.8581	159	.2787
.8	2026	.8299	159	.5929
.9	2034	.8174	159	.9071
51.0	2042	.6206	160	.2212
.1	2050	.8895	160	.5354
.2	2058	.8742	160	.8495
.3	2066	.9245	161	.1637
.4	2074	.9905	161	.4779
.5	2083	.0723	161	.7920
.6	2091	.1697	162	.1062
.7	2099	.2829	162	.4203
.8	2107	.4118	162	.7345
.9	2115	.5563	163	.0487
52.0	2123	.7166	163	.3628
.1	2131	.8926	163	.6770
.2	2140	.0843	163	.9911
.3	2148	.2917	164	.3053
.4	2156	.5149	164	.6195
.5	2164	.7537	164	.9336
.6	2173	.0082	165	.2479
.7	2181	.2785	165	.5619
.8	2189	.5644	165	.8761
.9	2197	.8661	166	.1903
53.0	2206	.1834	166	.5044
.1	2214	.5165	166	.8186
.2	2222	.8653	167	.1327
.3	2231	.2298	167	.4469
.4	2239	.6100	167	.7610
.5	2248	.0059	168	.0752
.6	2256	.4175	168	.3894
.7	2264	.8448	168	.7035
.8	2273	.2879	169	.0177
.9	2281	.7466	169	.3318
54.0	2290	.2210	169	.6460
.1	2298	.7112	169	.9602
.2	2307	.2171	170	.2743
.3	2315	.7386	170	.5885
.4	2324	.2759	170	.9026
.5	2332	.8289	171	.2168
.6	2341	.3976	171	.5310
.7	2349	.9820	171	.8451
.8	2358	.5821	172	.1593
.9	2367	.1979	172	.4735
55.0	2375	.8294	172	.7876
.1	2384	.4767	173	.1017
.2	2393	.1396	173	.4159
.3	2401	.8183	173	.7301
.4	2410	.5126	174	.0442
.5	2419	.2227	174	.3584
.6	2427	.9485	174	.6726
.7	2436	.6899	174	.9867
.8	2145	.4471	175	.3009
.9	2454	.2200	175	.6150

UNITED STATES STANDARD SIZES OF WROUGHT IRON WELDED PIPE.

Inside diam- eter nom.		Actual outside Diam- eter.		Thick- ness.	Actual Inside Diam- eter.		External circum- ference.		Internal circum- ference.		Length of pipe per square foot of outside surface.		Length of pipe per square foot of inside surface.		External area.		Actual internal area.		Length of pipe con- taining one cubic foot.		Weight per foot of length.		No. of threads per Inch of screw.		Length perfect screw.
	1⁄8		.405	.068	0	.269	1	.272	0	.848	9	.440	14	.15		.129		.0572	2500	.		.243	27		0.19
	1⁄4		.54	.088	0	.364	1	.696	1	.144	7	.075	10	.50		.229		.1041	1385	.		.422	18		0.29
	3⁄8		.675	.091	0	.493	2	.121	1	.552	5	.657	7	.67		.358		.1916	751	.5		.561	18		0.30
	1⁄2		.840	.109	0	.622	2	.652	1	.957	4	.502	6	.13		.554		.3048	472	.4		.845	14		0.39
	3⁄4	1	.050	.113	0	.824	3	.299	2	.589	3	.637	4	.635		.866		.5333	270	.0	1	.126	14		0.40
1		1	.315	.134	1	.047	4	.134	3	.292	2	.903	3	.679	1	.357		.8627	166	.9	1	.670	11	1⁄2	0.51
1	1⁄4	1	.660	.140	1	.38	5	.215	4	.335	2	.301	2	.768	2	.164	1	.496	96	.25	2	.258	11	1⁄2	0.54
1	1⁄2	1	.90	.145	1	.61	5	.969	5	.061	2	.010	2	.371	2	.835	2	.038	70	.65	2	.694	11	1⁄2	0.55
2		2	.375	.154	2	.067	7	.461	6	.494	1	.611	1	.848	4	.430	3	.355	42	.36	3	.667	11	1⁄2	0.58
2	1⁄2	2	.875	.204	2	.467	9	.032	7	.754	1	.328	1	.547	6	.491	4	.783	30	.11	5	.773	8		0.89
3		3	.50	.217	3	.066	10	.996	9	.636	1	.091	1	.245	9	.621	7	.388	19	.40	7	.547	8		0.95
3	1⁄2	4	.0	.226	3	.548	12	.566	11	.146		.955	1	.077	12	.566	9	.837	14	.56	9	.055	8		1.00
4		4	.50	.237	4	.026	14	.137	12	.648		.849	0	.949	15	.901	12	.730	11	.31	10	.728	8		1.05
4	1⁄2	5	.0	.247	4	.506	15	.708	14	.153		.765	0	.848	19	.635	15	.939	9	.03	12	.492	8		1.10
5		5	.563	.259	5	.045	17	.475	15	.849		.629	0	.757	24	.299	19	.990	7	.20	14	.564	8		1.16
6		6	.625	.280	5	.065	20	.813	19	.054		.577	0	.630	34	.471	28	.889	4	.98	18	.767	8		1.26
7		7	.625	.301	7	.023	23	.954	22	.063		.505	0	.544	45	.663	38	.737	3	.72	23	.410	8		1.36
8		8	.625	.322	7	.981	27	.096	25	.076		.444	0	.478	58	.426	50	.039	2	.88	28	.348	8		1.46
9		9	.688	.344	9	.00	30	.433	28	.277		.394	0	.425	73	.715	63	.633	2	.26	34	.677	8		1.57
10		10	.750	.366	10	.018	33	.772	31	.475		.355	0	.381	90	.762	78	.838	1	.80	40	.641	8		1.68

Thread taper three-fourths inch to one foot.

All pipe below 1¹⁄₂ inches is butt-welded, and proved to 300 pounds per square inch; 1¹⁄₂ inch and above is lap-welded and proved to 500 pounds per square inch.

STANDARDS FOR WIRE GAUGES IN USE IN THE UNITED STATES.
Dimensions of Sizes in Decimal Parts of an Inch.