Consisting of an encoder or potentiometer and a wire that pays off a drum, a cable extension transducer provides inexpensive measuring over long distances because its wire needs no guidance to follow a straight line-only an attachment at the working end. Also called draw wire sensors, string pots, even yo-yo sensors, the devices can be installed without much fussing over alignments. They are built to withstand extreme environments, such as paper mills, or can be furnished as instrument grade styles that are at home in a lab.
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
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