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Hand tools have been used by humans since the Stone Age, when stone tools were used for hammering and cutting. During the Bronze Age, tools were made by casting alloys of copper and tin. Bronze tools were sharper and harder than those made of stone. During the Iron Age iron replaced bronze
Stone tools preserve more readily than tools of many other materials. [ 1 ] [ 2 ] So the oldest tools that we can find in many areas are going to be stone tools. It could be that these tools were once accompanied by, or even preceded by, non-stone tools that we cannot find because they did not preserve.
Hand axes are a type of the somewhat wider biface group of two-faced tools or weapons. Hand axes were the first prehistoric tools to be recognized as such: the first published representation of a hand axe was drawn by John Frere and appeared in a British publication in 1800. [3] Until that time, their origins were thought to be natural or ...
Some smaller tools were made from large flakes that had been struck from stone cores. These flake tools and the distinctive waste flakes produced in Acheulean tool manufacture suggest a more considered technique, one that required the toolmaker to think one or two steps ahead during work that necessitated a clear sequence of steps to create ...
Bronze saws were likely used before steelmaking technology became extensively known and industrialized. The most popular material for handles of hand saws is applewood; in the early 1900s 2,000,000 board feet of applewood were used annually for this purpose.
Ancient stone tools from Ethiopia were hand-crafted by Australopithecus or related people. [1] [2] [further explanation needed] 2.3 Mya: Earliest likely control of fire and cooking, by Homo habilis [3] [4] [5] 1.76 Mya: Advanced stone tools in Kenya by Homo erectus [6] [7] 1.75 Mya – 150 kya: Varying estimates for the origin of language [8] [9]
Some Sears Craftsman Professional products lines (such as the former USA made Professional wrench line) were made by the Armstrong Division of Danaher and were virtually the same units, save for the stamping of the different names. In 1994, Armstrong was acquired by the Danaher Corporation, where it operated as its industrial hand tools division.
Throughout the 60s, 70s and 80s, Keen Kutter knives were made for VAL-TEST by Schrade Cutlery Co. and in the 2000's, ... Pocket knives, hand tools, railway locks, and ...