Mark or No.

Thickness in inches.

1

•004

2

•005

3

•008

4

•010

5

•012

6

•013

7

•015

8

•016

9

•019

Mark or No.

Thickness in inches.

10

•024

11

•029

12

•034

13

•036

14

•041

15

•047

16

•051

17

•057

18

•061

Mark or No.

Thickness in inches.

19

•064

20

•067

21

•072

22

•074

23

•077

24

•082

25

•095

26

•103

27

•113

Mark or No.

Thickness in inches.

28

•120

29

•124

30

•126

31

•133

32

•143

33

•145

34

•148

35

•158

36

•167

The Sheet and Hoop Iron Gauge, BG, was issued by the South Staffordshire Iron Masters' Association for the use of sheet and hoop iron makers, 1st March 1884, and is adopted by the trade. It is important that in all transactions in sheet and hoop iron the initial letters BG should appear, to distinguish the Sheet and Hoop Iron Gauge from the Imperial Standard Wire Gauge.1

Number of Gauge.

Thickness. Inch.

7/0

•6666

6/0

•6250

5/0

•5883

4/0

•5416

Number of

Gauge.

Thickness. Inch.

3/0

•5000

2/0

•4452

1/0

•3964

1

•3532

Number of Gauge.

Thickness. Inch.

2

•3147

3

•2804

4

•2225

The more useful part of the Table is given above. The numbers continue to gauge No. 50, which has a thickness of "0010 inch.