A pattern weighing 1 lb., and made of

Will weigh when cast in

Cast Iron.

Zinc.

Copper.

Yellow Brass.

Gun Metal.

Mahogany

8

8

10

9.8

10

(St. Domingo).....

10

9.5

12

11.5

12

Maple......................

10

9.8

12.5

12

12.4

Beech

11

11

14

13.4

13.8

Cedar

11.5

11.4

14.5

14

14.5

Yellow Pine................

13

12.6

16

15.5

16

White Pine

14

14.5

18

17.5

17.8

Example: The pattern of a wheel made of cedar weighs 8 lbs, how much will a casting of iron weigh? 8 lbs. weight of pattern multiplied by 11.5, which is the multiplier for iron set opposite cedar, equals 92.0 weight of casting.