ClipArt ETC
An auger is a device for moving material or liquid (see Archimedes' screw) by means of a rotating helical flighting. The material is moved along the axis of rotation. For some uses the helical 'flighting' is enclosed in a tube, for other uses the flighting is not encased. An integral part of a drill, the auger of the drill bit, uses this mechanism to remove shavings from the hole being drilled.

Auger

An auger is a device for moving material or liquid (see Archimedes' screw) by means of a rotating helical…

Pictured is a beetle borer and its work. The larva bores in the young wood of raspberry and blackberry.

Beetle Borer

Pictured is a beetle borer and its work. The larva bores in the young wood of raspberry and blackberry.

An illustration of a wood-boring beetle

Wood-boring Beetle

An illustration of a wood-boring beetle

"The flatheaded borer, the larva." — Goff, 1904

Borer Insect

"The flatheaded borer, the larva." — Goff, 1904

"The flatheaded borer, the pupa." — Goff, 1904

Borer Insect

"The flatheaded borer, the pupa." — Goff, 1904

"The flatheaded borer, the perfect beetle." — Goff, 1904

Borer Insect

"The flatheaded borer, the perfect beetle." — Goff, 1904

An illustration of a wood-boring beetle known as an apple tree borer.

Apple Tree Borer

An illustration of a wood-boring beetle known as an apple tree borer.

"Beetle of the locust borer." —Davison, 1906

Locust Borer

"Beetle of the locust borer." —Davison, 1906

"Peach tree borer, female moth." —Davison, 1906

Peach Tree Borer

"Peach tree borer, female moth." —Davison, 1906

"Peach tree borer, pupae." —Davison, 1906

Peach Tree Borer

"Peach tree borer, pupae." —Davison, 1906

"Peach tree borer, pupae." —Davison, 1906

Peach Tree Borer

"Peach tree borer, pupae." —Davison, 1906

"Peach tree borer, larva." —Davison, 1906

Peach Tree Borer

"Peach tree borer, larva." —Davison, 1906

"Peach tree borer, chip cocoon with extruded pupa skin." —Davison, 1906

Peach Tree Borer

"Peach tree borer, chip cocoon with extruded pupa skin." —Davison, 1906

The potato-stalk borer, is a small ash gray weevil about one-sixth of an inch in length, with a black snout and three small black spots at the base of the wing-covers

Potato-Stalk Borer Adult

The potato-stalk borer, is a small ash gray weevil about one-sixth of an inch in length, with a black…

The potato-stalk borer, is a small ash gray weevil about one-sixth of an inch in length, with a black snout and three small black spots at the base of the wing-covers

Potato-Stalk Borer Larva

The potato-stalk borer, is a small ash gray weevil about one-sixth of an inch in length, with a black…

The potato-stalk borer, is a small ash gray weevil about one-sixth of an inch in length, with a black snout and three small black spots at the base of the wing-covers

Potato-Stalk Borer Pupa

The potato-stalk borer, is a small ash gray weevil about one-sixth of an inch in length, with a black…

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage. This is the larva.

Tree Borer

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage.…

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage. This is the pupa.

Tree Borer

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage.…

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage.

Tree Borer

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage.

A brace or brace and bit is a hand tool used to drill holes, usually in wood. Pressure is applied to the top and the tool is rotated with a U-shaped grip. The U-shaped part is a kind of crankshaft. It gives the brace much greater torque than other kinds of hand drill; a brace can be used to drill much wider, and deeper, holes than can a gear-driven hand drill.

Brace and Bits

A brace or brace and bit is a hand tool used to drill holes, usually in wood. Pressure is applied to…

"On the continent of Europe the <em>Sirex gigas</em> often appears in immense numbers, and does great damage in this way." &mdash; Goodrich, 1859

Sawfly

"On the continent of Europe the Sirex gigas often appears in immense numbers, and does great…