Nap Meter
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A short dictionary entry describing the Nap Meter, an instrument devised by Prof. Kittary and used by the Russian war office to test the wearing quality of cloth. A strip of cloth is wound on a leather-faced, double-flanged wheel and worn by weighted rasps, and the number of crank turns needed to wear it threadbare gives a comparative measure of durability. An engraving (Fig. 1799) shows the Russian Nap Meter with its dial counters and crank.
- Type
- Article
- Date
- 1884
- Language
- English
- Pages
- 1
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From Ralph Griswold's Digital Archive, delivered by the University of Arizona.
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