A rod used to collect molten glass for glassblowing.


Related Terms

SOUNDING PIPE

A pipe leading to the bottom of an oil or water tank, for guiding a sounding tape or jointed rod when measuring the depth of liquid in the tank.
Sounding pipes in the engine room are normally fitted with deadweight cocks and screw caps. Caps and cocks should be closed at all times, except when sounding tanks.

POISSON RATIO

The ratio of the transverse contracting strain to the elongation strain when a rod is stretched by forces which are applied at its ends and which are parallel to the rod's axis.

POINTER

The needle-shaped rod that moves over the scale of a meter.

PLUNGER

1. A wooden shaft with a large rubber suction cup at the end, used to clear plumbing traps and waste outlets. 2. The long rod or piston of a reciprocating pump.

PISTON PIN

A cylindrical pin that connects the connecting rod to the piston. Also known as wrist pin.

PIPEWORK SEE PIPING. PIPE WRENCH

A tool designed to grip and turn a pipe or rod about its axis in one direction only. piping

PIN ROD

A rod designed to connect two parts so they act as one.

PERCUSSION DRILL

A drilling machine usually using compressed air to drive a piston that delivers a series of impacts to the shank end of a drill rod or steel and attached bit.

OFF-LINE

1. A condition existing when the drive rod of the drill swivel head is not centered and parallel with the borehole being drilled. 2. A borehole that has deviated from its intended course. 3. A condition existing wherein any linear excavation (shaft, drift, borehole) deviates from a previously determined or intended survey line or course. 4. State in which an equipment or subsystem is in standby, maintenance, or mode of operation other than online.

NICHOLS RADIOMETER

An instrument, used to measure the pressure exerted by a beam of light, in which there are two small, silvered glass mirrors at the ends of a light rod that is suspended at the center from a fine quartz fiber within an evacuated enclosure.

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