flow cone(redirected from Marsh funnel)
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flow cone[′flō ‚kōn]
One of a collection of elements of conical shape that may be attached to an aerodynamic surface to visualize the fluid flow over the surface.
A device for measuring grout consistency; after a predetermined volume of grout is permitted to flow through an orifice of known size, the time of efflux (called the flow factor) is an indication of the consistency.