The treadle pump is easy to build from bamboo or other wood and two metal cylinders with pistons.

VOA: special.2009.08.17

They were conservative men. They represented workers with certain skills, such as wood workers or metal workers.

VOA: special.2011.03.31

This metal form is chemically treated before being covered with ink and then pressed onto paper.

VOA: special.2009.09.02

A hoop house is basically a metal frame covered with plastic or other all-weather material.

VOA: special.2009.12.22

With this method,the printmaker cuts or etches an image onto a piece of metal.

VOA: special.2009.09.02

The first computer mouse was a carved block of wood with two metal wheels.

VOA: special.2010.08.01

Bell experimented with devices that could find bullets and other metal in the body.

VOA: special.2010.05.14

This metal surface, placed in contact with the water, will heat the water.

VOA: special.2009.04.20

The shelves are pieces of metal with many small holes through them.

VOA: special.2009.11.30

Faulkner says he is a person with the depth of pressed metal.

VOA: special.2010.01.10

Purdue University provided Amelia with a new all-metal, two-engine plane.

VOA: special.2010.05.26

People use a metal call box with a push-to-talk button to connect to a live operator, as Rose Shuman explains: "You just push a button, a big green button, and that will connect you directly to our operators who are sitting in front of computers, and speak your language.

VOA: special.2009.10.12

With his money and scientific genius, he creates an almost indestructible, flying,metal suit of armor.

VOA: standard.2010.05.19