Practical Mechanics for Boys

by James Slough Zerbe

Sizes in Inches	Weight in Pounds		Sizes in Inches	Weight in Pounds
	Round	Square		Round	Square
1/16	.110	.013	1 1/16	3.014	3.400
1/8	.042	.053	1 1/8	3.379	3.838
3/16	.094	.119	1 3/16	3.766	4.303
1/4	.167	.212	1 1/4	4.173	4.795
5/16	.261	.333	1 5/16	4.600	5.312
3/8	.375	.478	1 3/8	5.049	5.857
7/16	.511	.651	1 7/16	5.518	6.428
1/2	.667	.850	1 1/2	6.008	7.650
9/16	.845	1.026	1 9/16	6.520	7.650
5/8	1.043	1.328	1 5/8	7.051	8.301
11/16	1.262	1.608	1 11/16	7.604	8.978
3/4	1.502	1.913	1 3/4	8.178	10.410
13/16	1.773	2.245	1 13/16	8.773	11.170
7/8	2.044	2.603	1 7/8	9.388	11.950
15/16	2.347	2.989	1 15/16	10.020	12.760
1	2.670	3.400	2	10.680	13.600

[p. 179]

WEIGHT OF FLAT STEEL BARS.

Thickness in Inches	Width
1/16	.212	.265	.32	.372	.425	.477	.53	.588	.63
1/8	.425	.53	.64	.745	.85	.955	1.06	1.17	1.27
3/16	.638	.797	.957	1.11	1.28	1.44	1.59	1.75	1.91
1/4	.85	1.06	1.28	1.49	1.70	1.91	2.12	2.34	2.55
5/16	1.06	1.33	1.59	1.86	2.12	2.39	2.65	2.92	3.19
3/8	1.28	1.59	1.92	2.23	2.55	2.87	3.19	3.51	3.83
7/16	1.49	1.85	2.23	2.60	2.98	3.35	3.72	4.09	4.46
1/2	1.70	2.12	2.55	2.98	3.40	3.83	4.25	4.67	5.10
9/16	1.92	2.39	2.87	3.35	3.83	4.30	4.78	5.26	5.74
5/8	2.12	2.65	3.19	3.72	4.25	4.78	5.31	5.84	6.38
11/16	2.34	2.92	3.51	4.09	4.67	5.26	5.84	6.43	7.02
3/4	2.55	3.19	3.83	4.47	5.10	5.75	6.38	7.02	7.65
13/16	2.76	3.45	4.14	4.48	5.53	6.21	6.90	7.60	8.29
7/8	2.98	3.72	4.47	5.20	5.95	6.69	7.44	8.18	8.93
15/16	3.19	3.99	4.78	5.58	6.38	7.18	7.97	8.77	9.57
1	3.40	4.25	5.10	5.95	6.80	7.65	8.50	9.35	10.20

[p. 180]

AVOIRDUPOIS WEIGHT.

For Merchandise of all kinds.

16	Drams (dr.) make	1 Ounce (oz.)
16	Ounces make	1 Pound (pd.)
25	Pounds make	1 Quarter (qr.)
4	Quarters, or 100 lbs., make	1 Hundredweight (cwt.)
20	Hundredweights make	1 Ton (T.)
2,240	Pounds make	1 Long ton (L. T.)

TROY WEIGHT.

For Gold, Silver, and Precious Metals.