Ancient Mesopotamia: This History, Our History. University of Chicago. Mesopotamia 8000-2000 B.C. Metropolitan Museum of Art. 30,000 Years of Art. Editors at Phaidon.

Explanation: A Vernier depth gauge is a precision instrument, used to measure the depth of holes, recesses, slots and steps within the accuracy of 0.02 mm. It consists of the following parts: Base Graduating Beam Clamping Screws Fine adjustment mechanism Vernier Scale

Depth gauges (also known as depth micrometers) are tools for measuring things such as depth of grooves and height of protrusions. Numerical measurements are made by vernier. Main scale length is generally 150, 200, or 300 mm. Those with a dial gauge, micrometer-type depth m. Read more View More > 89 items List Grid View 1 2 Next >>

Get a feel for atoms, molecules, and how they interact with each other. After all, that's what you (and all life) are made up of! Acid-base chemistry. A lot of the chemistry in your body is acid-base chemistry that takes place in watery solutions. Knowing what acids and bases are will get you a long way with biochemistry.

Defence in depth (also known as deep defence or elastic defence) is a military strategy that seeks to delay rather than prevent the advance of an attacker, buying time and causing additional casualties by yielding space.