plummet

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Related to plummets: lead astray

plummet

a lead plumb used by anglers to determine the depth of water

plummet

[′pləm·ət]
(engineering)
A loose-fitting metal plug in a tapered rotameter tube which moves upward (or downward) with an increase (or decrease) in fluid flow rate upward through the tube. Also known as float.

plumb bob, plummet

A shaped metal weight which is suspended from the lower end of a line to determine the vertical. (See illustration p. 744.)
References in periodicals archive ?
In Figure 2 there are presented versions of constructional-functional outcomes for the optoelectronic plummets.
The closed construction of the plummets is the basic measurement set (a few plummets mutually connected) and control set (a single plummet mounted on the whole length).
The control set (10) is a separate plummet, which allows to perform control of inclinations of the particular plummets of the basic set (9) according to the formula 1:
where: sum of inclinations of the particular plummets [DELTA][y.sub.Ai] is equal to the inclination of the control plummet [DELTA][y.sub.B].
After setting (mounting) the plummet in a rock block (Figures 3B and 3C) there is registered the position of the shining optic fibre core at the time t0, and then after a lapse of time -[t.sub.i] the next registration is taken (Fig.
Swedish truck maker Scania AB (Stockholm: SCV A) said on Monday (27 April) that its 2009 first quarter profit plummeted to SEK179m from SEK2.5bn in the first quarter last year.
In a news interview several months later, Stacey Plummet had this to say: "[Genia's] made the perfect extension of our family.
And we can't think of better parents than Trent and Stacey Plummet!