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The American history of hay cutting tools begins with the reaping hook. Its slender, ultra sharp, half circle blade was employed in cutting grass for hay and it took some skill to use successfully. By the late 1800s the less artful sickle became the hay cutting tool of choice.
The handheld tools for scraping and cutting were no longer sought after, for tools with shapes that fit the hand seemed to be the upcoming trend. Starting about 1.6 million years ago, this new technology evolution emerged, known as the Acheulean tradition. Tools classified under this category are known as the earliest indicators of hand axe ...
Stone tools Happisburgh [56] 0.9–0.7 Great Britain Western Europe Stone tools Kalinga site [57] 0.7 Luzon, Philippines Island Southeast Asia H. luzonensis (presumed) Stone tools, cut marks on bone See Nesorhinus: Mata Menge, So'a Basin [58] 0.7 Flores, Indonesia Island Southeast Asia H. floresiensis (presumed) Stone tools Ounjougou [59] 0.5 ...
Quern-stones are stone tools for hand-grinding a wide variety of materials, especially for various types of grains. They are used in pairs. The lower stationary stone of early examples is called a saddle quern, while the upper mobile stone is called a muller, rubber, or handstone. The upper stone was moved in a back-and-forth motion across the ...
A circular saw is a tool for cutting many materials such as wood, masonry, plastic, or metal and may be hand-held or mounted to a machine. In woodworking the term "circular saw" refers specifically to the hand-held type and the table saw and chop saw are other common forms of circular saws. "Skilsaw" and "Skil saw" have become generic ...
The mano began as a one-handed tool. Once the maize cultivation became more prevalent, the mano became a larger, two-handed tool that more efficiently ground food against an evolved basin or trough metate. [4] Besides food, Manos and metates were used to separate and pulverize clay from earthen debris and stones.
Chopping tools. In archaeology a chopping tool is a stone tool. Stone tools are usually dated by determining the age of the find context e.g. by carbon-14 dating and potassium–argon dating. The oldest stone tools are about 3 million years old. Chopping tools mainly occur in the Olduwan (2.9 to 1.6 million years ago).
Angle grinder. An angle grinder, also known as a side grinder or disc grinder, is a handheld power tool used for grinding (abrasive cutting) and polishing.Although developed originally as tools for rigid abrasive discs, the availability of an interchangeable power source has encouraged their use with a wide variety of cutters and attachments.