Cast Iron (Sen) Carpenter's Tool, Late Edo Period

This item was found while cleaning out my family's storehouse.
It is believed to have been used by my great-grandfather when he worked as a temple carpenter.
The metal parts are rusted, but the wooden parts are, to my amateur eye, still sturdy and in good condition.
As I am a complete novice when it comes to these items, I will be selling them as-is.
I have many more such antique tools and plan to list them periodically, so I appreciate your understanding.

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