NASA NTRS · 19750000249
Position sensing materials wound on a reel
Abstract
Electro-optical counter measures number of layers of web wound on reel and indicates layer number and web position digitally, without physically contacting reel or requiring numerical interpolation from mechanical readout device.
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Muller, R. M.. 1975-10-01. Position sensing materials wound on a reel. https://ntrs.nasa.gov/citations/19750000249
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