Stone saw - Ishinoko

Japanese: 石鋸 - いしのこ

A flat chipped stone tool with a sawtooth blade. Several pieces were inserted into a rod-shaped object to use. Its purpose is unclear, but one theory is that it was used to harvest grain or as a stabbing fishing tool. It is found in various parts of Europe and Asia, from the Korean Peninsula to the north and western part of Kyushu. It is widely believed that it was introduced to Japan in the Korean Peninsula along with comb-patterned pottery. In Japan, it was made from the late Jomon period to the final Jomon period.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

鋸歯状の刃を呈した扁平な打製石器。棒状のものに数個差込んで使った。目的は判然としないが，穀物を刈るためあるいは刺突する漁具として使ったという説がある。分布はヨーロッパ，アジアの各地，朝鮮半島から九州の北・西部にかけてみられる。朝鮮半島では櫛目文土器と伴出し，日本へ将来されたものという考えが強い。日本では縄文時代後期から晩期にかけてつくられた。

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