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THREAD. A figurative expression used to signify the central line of a stream or water course. Harg. Tracts, 5; 4 Mason's Rep. 397; Holt's R. 490. Vide Filum aguae; Island; Water course; River.

References in periodicals archive ?
Lead of thread: The lead of thread is the distance a screw thread advances axially in one complete turn.
A right-handed thread is a screw thread that requires right-hand or clockwise rotation to tighten it.
For five years in the late '50s and early '60s, I was on the screw thread subcommittee for the unified miniature thread series.
The effects of screw thread pitch are shown for edge SWR in Figure 4a, and lateral edge load in Figure 4b.
epsilon]] in Eq 3, with some degree of cooling due to heat transfer to the screw thread and body.
The continuous thread finishes, 33-400, 38-400 and 45-400, will accept either a standard screw thread or a child resistant closure, while the 33 mm, 38 mm and 45 mm tamper evident finishes will accommodate a snap-on style closure.
Structural scraper/wiper system -- Scraper/wipers, assembled in each end of the ball nut, can also be designed to react structural loads and work as an Acme-type male thread if engaged with the screw thread.
Maintenance-free system eliminates screw thread, ball bearing, and other debris-entrapping orifices.
10,11) However, there are no studies that indicate whether a particular screw diameter or screw thread type provides a more stable construct.
Snap, plug, ring, screw thread plug, and thread ring gauges are the topics in Course 3, "Fixed Gauges.
Other areas of Metrology TSL specialise in is screw thread measurement, often being called upon to arbitrate in customer/ manufacturer disputes or thread identifications.
While designing the power screw and nut set for the intelligent ankle module, Precision Screw Thread Corp.