Here we have the rhythm of the book, which resembles the surface of a pond disturbed by a thrown pebble. Anyway, there are screws in Ramelli''s book, presuming absent screwdrivers, and we have retreated another century.De Re Metallica backs up again, to 1556, with the illustration of a slotted screw to attach the leather to a bellows. An illustrated manuscript of 1475 to 1490--a sort of household manual for a castle--shows slotted screws fastening a leg iron and a pair of manacles--castle staples. This train of thought leads the author to war, a great stimulus to invention, witness radar and the jet engine. Pollard''s History of Firearms illustrates a fifteenth-century German equivalent of the sawed-off shotgun in which the stock is screwed to the metal. Research in the Metropolitan Museum of Art turned up a screw of the 1480s attaching parts of a suit of armor. Screws were slotted with a hacksaw and the threads were filed by hand until, in 1760, Job and William Wyatt in Staffordshire patented a machine that turned out more consistent screws at the rate of one about every six seconds. The author comments that, a century before the industrial revolution, "their factory was the earliest example of an industrial process designed specifically to shift control over the quality of what was being produced from the skilled artisan to the machine itself"

The machine''s speed and drive functions in either steering mode is controlled through the left-hand joystick, while the right-hand joystick controls lift and tilt functions, as well as auxiliary hydraulic functions. The joysticks were supplied by Sauer-Danfoss eletrohydraulics, with a grip that is proprietary to Bobcat and co-developed by Sauer-Danfoss.In all-wheel steer mode, the wheels follow a precisely engineered turning pattern designed to provide the highest amount of maneuverability with the lowest amount of impact to the surface. "There are variations in speed from the inside and outside wheels, as well as different turn angles," said Osborn. "The outside tire will turn at a 13[degrees] angle in a full turn and the inside tire turns at up to 24[degrees], no matter which way you''re turning. The inside and outside are at different angles and different speeds in order to minimize the turf disturbance, the marking on the asphalt, concrete, the tire wear, all the things that we were looking to address."

It is not just California farming that Italian farm machinery manufacturers are interested in. Many of the companies exhibiting at the recent 34th annual International Agricultural and Gardening Machinery Exhibition (EIMA) in Bologna, Italy left no doubt that the U.S. is a key market for them. Many like Tonutti have been aggressively marketing their equipment in the U.S. and around the world. They view the U.S. as one of the more positive markets right now.EIMA, organized by Italian National Union of Agricultural Machinery Manufacturers, featured more than 1,700 exhibitors (1,100 Italian manufacturers) in more than 20 giant exhibit halls totaling more than 1.6 million square feet housing 22,000 machinery models and innumerable other suppliers of agricultural parts and services. More than 100,000 people visit the show annually.

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