Best Surgical instrument of All Time is a public top list created by Listnerd on rankly.com on November 27th 2012. Items on the Best Surgical instrument of All Time top list are added by the rankly.com community and ranked using our secret ranking sauce. Best Surgical instrument of All Time has gotten 202 views and has gathered 13 votes from 13 voters. O O
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A saw is a tool that uses a hard blade, wire, or chain with a toothed edge to cut through softer materials. A saw may be worked by hand, or powered by steam, water, electricity or other power. An abrasive saw uses a powered circular blade for cutting metal.
In a modern serrated saw, each tooth is bent to a precise angle called its set. The set of the teeth is determined by the kind of cut the saw is intended to make. For example, a rip saw has a tooth set that is similar to the angle used on a chisel. The idea is to have the teeth rip or tear the material apart. Some teeth are usually splayed slightly to each side of the blade so that the cut width (kerf) is wider than the blade itself and the blade does not bind in the cut. The kerf of the blade is adjusted with a tool called a saw tooth setter.
An abrasive saw uses an abrasive disc or band for cutting, rather than a serrated blade.
In ancient Egypt, saws made of copper are documented as early as the Early Dynastic Period, circa 3,000–2,800. Examples of saws and models of saws have been found in many contexts throughout Egyptian history. Particularly useful are tomb wall illustrations of carpenters at work that show sizes and the