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Table 169.-SPECIFIC GRAVITY AND WEIGHT OF MATERIALS, AND OF LIQUIDS AND GASES.

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Table 169 continued.-SPECIFIC GRAVITY AND WEIGHT OF MATERIALS.

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Table 170.-BULK OR STOWAGE CAPACITY PER TON OF VARIOUS

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Table 170 continued.-BULK OR STOWAGE CAPACITY PER TON OF VARIOUS SUBSTANCES.

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Barrels. To find the contents of a barrel in imperial gallons: first square the centre diameter in inches, and then multiply it by 2, to which add the square of the diameter of the end in inches; then multiply this by the length of the cask in inches, and divide by 1122.

Table 172.-APPROXIMATE POWER REQUIRED TO DRIVE SELF-ACTING MACHINE-TOOLS WHEN CUTTING METAL AT AN AVERAGE Speed, with AN AVERAGE RATE OF TRAVERSE, OR FEED.

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Ditto ditto ditto 7

Face-lathe, turning 8 feet diameter

Railway-wheel lathe, turning 5 feet diameter

Planing machine to plane 6 ft. long and 2 ft. 6 in. wide.

'77

115

1.67

2.50

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Ditto ditto

ditto 10 ditto 3 O ditto

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ditto 20

ditto

4 O

ditto 1'07

1.60

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24 Ditto ditto ditto

Vertical drilling machine boring a hole 4 inches diameter

Milling machine, with cutters 8 inches diameter

Ditto ditto ditto 15

Screwing machine, screwing iron-bolts 1 inch diameter
Wheel-cutting machine, cutting cast-iron wheels 1 in. pitch
Horizontal boring machine, boring a hole 18 in. diameter
Cylinder boring machine, boring 4 feet diameter
Punching and shearing machine for plates & inch thick

ditto

I

ditto

Ditto
Plate-bending-machine for plates 4 ft. wide and in. thick
Ditto ditto ditto ΙΟ ditto

ditto

*75

*75

1'12

'20

*30

12

ditto

ditto

*38

*56

⚫20

*30

*52

'77

12

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1'12

1.16

2°45

2930

4:48

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