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Babbage, Charles, 1792-1871

"On the Economy of Machinery and Manufactures"

As the
rate of wages is itself fluctuating, and as the prices paid and
quantities executed have been given only between certain limits,
it is not to be expected that this table can represent the cost
of each part of the work with the minutest accuracy, nor even
that it shall accord perfectly with the prices above given: but
it has been drawn up with some care, and will be quite sufficient
to serve as the basis of those reasonings which it is meant to
illustrate. A table nearly similar will be subjoined, which has
been deduced from a statement of M. Perronet, respecting the art
of pin-making in France, above seventy years ago.
English manufacture
236. Pins, Elevens, 5546 weigh one pound; one dozen = 6932
pins weigh twenty ounces, and require six ounces of paper.
Name of the process
Workman
Time for making 1 lb of pins Hours
Cost of making 1 lb of pins Pence
Workmen earns per day s. d.
Price of making each part of a single pin in millionths of a
penny

1. Drawing wire (224) Man .3636 1.2500 3 3 225
2. Straightening wire ( 225) Woman .3000 .2840 1 0 51
Girl .


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