Royal Armouries image collection.

[estcrh]

Here is another glaring mistake, this is a "tsukubo" but is it not a "sode garami", that is another type of tool used for catching / holding criminals, there are three such tools which together are called torimono sandōgu (three tools of arresting).

Catch pole (sode garami) (1800-1899) of the type called tsukubo Place: Japan