ClipArt ETC
Swing bridge.

Brdige, Swing

Swing bridge.

A corolla with a very short tube and a spreading limb.

Rotate Corolla

A corolla with a very short tube and a spreading limb.

Cube rotated 30° with vertical plane.

Cube Rotated 30°

Cube rotated 30° with vertical plane.

A lathe is a machine tool which spins a block of material to perform various operations such as cutting, sanding, knurling, drilling, or deformation with tools that are applied to the workpiece to create an object which has symmetry about an axis of rotation.

Foot-power Wood-working Lathe

A lathe is a machine tool which spins a block of material to perform various operations such as cutting,…

A gyroscope that is rotated to form an ellipse.

Gyroscope

A gyroscope that is rotated to form an ellipse.

"Extend the arm horizontally toward the platoon leader; describe small circles with the hand." — Moss, 1914

Hand signal

"Extend the arm horizontally toward the platoon leader; describe small circles with the hand." —…

A lathe is a machine tool which spins a block of material to perform various operations such as cutting, sanding, knurling, drilling, or deformation with tools that are applied to the workpiece to create an object which has symmetry about an axis of rotation.

Large Power Lathe

A lathe is a machine tool which spins a block of material to perform various operations such as cutting,…

Illustration of a plane rotated about a straight line.

Plane Rotated About a Straight Line

Illustration of a plane rotated about a straight line.

Pair of circular pulleys connected b a cord, showing the range of motion as arcs

Pulley

Pair of circular pulleys connected b a cord, showing the range of motion as arcs

A flying machine invented by George Cayley. It is an early model of the helicopter.

Cayley's Aerial Screw

A flying machine invented by George Cayley. It is an early model of the helicopter.

"Water enters through J and K following into G and H compartments. Afterwards the water is forced into the outside compartments thus turning the wheel." —Quackenbos 1859

Water Turbine

"Water enters through J and K following into G and H compartments. Afterwards the water is forced into…