A lathe with chasing bar and leaders for cutting threads; used for turning brass.


Related Terms

OSCILLISTOR

A bar of semiconductor material, such as germanium, that will oscillate much like a quartz crystal when it is placed in a magnetic field and is carrying direct current that flows parallel to the magnetic field.

OPTICAL BENCH

A rigid horizontal bar or track for holding optical devices in experiments; it allows device positions to be changed and adjusted easily.

METERBAR

A metal bar for mounting a gas meter, having fittings at the ends for the inlet and outlet connections of the meter.

JACKLEG

A supporting bar used with a jackhammer.

HOTCHKISS SUPERDIP

A sensitive dip needle consisting of a freely rotating magnetic needle about a horizontal axis and a nonmagnetic bar with a counterweight at the end which is attached to the pivot point of the needle.

HELICAL SPRING

A bar or wire of uniform cross section wound into a helix.

INDEX ARM

A slender bar carrying an index; particularly the bar which pivots at the center of curvature of the arc of a marine sextant and carries the index and the vernier or micrometer.

BAR PILOT

A bar pilot guides ships over the dangerous sandbars at the mouth of rivers and bays.

BAR

A Large mass of sand or earth, formed by the surge of the sea. They are mostly found at the entrances of great rivers or havens, and often render navigation extremely dangerous, but confer tranquility once inside.

LIGHT IRON

An iron bar mounted near the main shrouds which support the navigation lights

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