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Pliers are a hand tool used to hold objects firmly, or for cutting and bending tough materials such as wire. Generally pliers consist of a pair of metal first class levers joined at a fulcrum positioned closer o one end of the levers, creating short jaws on one side of the fulcrum, and longer handles on the other side.

Cutting Pliers

Pliers are a hand tool used to hold objects firmly, or for cutting and bending tough materials such…

A pulley, also called a sheave or a drum, is a mechanism composed of a wheel on an axle or shaft that may have a groove between two flanges around its circumference. A rope, cable, belt, or chain usually runs over the wheel and inside the groove, if present. Pulleys are used to change the direction of an applied force, transmit rotational motion, or realize a mechanical advantage in either a linear or rotational system of motion. Two or more pulleys together are called a block and tackle.

Pulley

A pulley, also called a sheave or a drum, is a mechanism composed of a wheel on an axle or shaft that…

In the screw press, the screw is turned by means of a lever, which gives a great increase of mechanical advantage.

Screw Press

In the screw press, the screw is turned by means of a lever, which gives a great increase of mechanical…

A wrench is a tool used to provide grip and mechanical advantage in applying torque to turn objects usually rotary fasteners, such as nuts and bolts or keep them from turning

Nut and Pipe Wrench

A wrench is a tool used to provide grip and mechanical advantage in applying torque to turn objects…