If a bar of lion be thicker than contained In the table, add together the weight of two numbers, or treble the weight of one number. Wanted the weight of 1 foot of bar iron, 4 inches broad and 2 1-4 inches thick. Opposite 4 and under 1 is 13.301, which doubled is 26.728; add the weight of l-4th (3.341), equal 30.009 lbs.__________________

Breadth in inches.

THICKNESS IN PARTS OF AN INCH.

¼

5/16

3/8

7/16

½

5/8

¾

7/8

1 in.

1

.835

1.044

1.253

1.461

1.670

2.088

2.506

2.023

3.340

1 1/8

.939

1.174

1.409

1.644

1.878

2.348

2.818

3.287

3.756

1¼

1.044

1.305

1.566

1.826

2.088

2.609

3.132

3.653

4.176

1 1/8

1.148

1.435

1.722

2.009

2.296

2.870

3.444

4.018

4.592

1½

1.252

1.566

1.879

2.192

2.504

3.131

3.758

4.384

5.008

1 5/8

1.358

1.65)6

2.035

2.374

2.716

3.392

4.070

4.749

5.432

1¾

1.4G2

1.827

2.192

2.557

2.924

3.653

4.384

5.114

5.848

1 7/8

1.566

1.957

2.348

2.740

3.182

3.914

4.696

5.479

6.264

2

1.671

2.088

2.505

2.922

3.342

4.175

5.010

5.845

6.684

2 1/8

1.775

2.218

2.662

3.105

3.550

4.435

5.324

6.210

7.100

2¼

1.880

2.348

2.818

3.288

3.760

4.696

5.636

6.575

7.520

2 3/8

1.984

2.479

2.975

3.470

3.968

4.957

5.950

6.941

7.936

2½

2.068

2.609

3.131

3.653

4.176

5.218

6.262

7.306

8.352

3%

2.193

2.740

3.288

3.836

4.386

5.479

6.576

7.671

8.772

2¾

2.297

2.870

3.444

4.018

4.594

5.740

6.888

8.036

9.188

2 7/8

2.402

3.001

3.601

4.201

4.804

6.001

7.202

8.402

9.608

3

2.506

3.131

3.758

4.384

5.012

6.262

7.516

8.767

10.024

3¼

2.715

3.392

4.071

4.749

5.430

6.784

8.142

9.498

10.860

3½

2.923

3.65;;

4.384

5.114

5.846

7.306

8.768

10.228

11.692

3¾

3.132

3.914

4.697

5.479

6.264

7.828

9.394

10.959

12.528

4

3.341

4.175

5.010

5.845

6.682

8.350

10.020

11.690

13.364

4¼

3.549

4.436

5.323

6.210

7.098

8.871

10.646

12.421

14.196

4½

3.758

4.697

5.636

6.575

7.516

9.393

11.272

13.151

15.032

4¾

3.966

4.958

5.949

6.941

7.932

9.915

11.898

13.881

15.864

5

4.175

5.219

6.263

7.306

8.350

10.437

12.526

14.612

16.700

5¼

4.384

5.479

6.576

7.671

8.768

10.958

13.152

15.343

17.536

5½

4.593

5.741

6.889

8.037

9.186

11.480

13.778

16.073

18.372

5¾

4.801

6.001

7.202

8.402

9.602

12.002

14.404

16.804 19.204

6

5.010

6.262

7.515

8.767

10.020

12.524

15.030

17.535 20.042

WEIGHT OF ONE SQUARE FOOT OF SHEET IRON, ETC.

Names.

Thickness by the Birmingham (Eng.) Wire Gauge.

1

2

3

4

6

6

7

8

9

10

11

12

13

14

15

Iron..

12.50

12 00

1100

10.00

8.74

8.12

7.50

6.86

6.24

5.62

5.00

4.38

3.75

312

2.82

Cop...

14 50

13.90

12 75

11.00

10.10

9.40

8.70

7.90

7.20

0.50

5.80

5.08

4.34

3.60

3.27

Brass

13.75

13.20

12.10

11.90

9.61

8.96

8.25

7.54

6.86

6.18

5.50

4.81

4.12

3.43

3.10

Thickness by the Wire Gauge.

16

17

18

19

20

21

22

23

24

23

26

27

28

29

30

Iron..

2 50

2.18

1.86

1.70

1.51

1.40

1.25

1.12

1.00

.90

.80

.72

.61

.56

.50

Cop..

290

2.52

2.15

1.97

1.78

1.62

1.45

1.30

1.16

1.04

.92

.83

.74

.64

.58

Brass

2.75

2.40

2.04

1.87

11.69

1.54

1.37

1.23

1.10

.99

.88

.79

.70

.61

.55

No. 1 Wire Gauge is 5-16th of an inch: No. 4 is l-4th: No. 11 is l-8th: No. 13 is l-12th; No. 15 is l-14th; No. 16 is l-16th; No. 17 is l-18th; No. 19 is 1-23; No. 22 is 1-32.