The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose

by Thomas Walter Barber

[Larger plate.]

[2208]. Loop or eye shackle.

[2209]. Swivel shackle for guy, rod, or hook.

[2210]. Slip hook.

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Section 44.—INDICATING SPEEDS, &c.

(See also [p. 100].)

Indicators are employed—

To register the entry and exit of workmen to or from a factory;

To register speeds and variation of load, steam pressure, &c., on an engine;