A Shikomizue is a type of Japanese concealed sword or sword cane. It is a cane or walking stick that contains a hidden blade within its shaft. The length of a Shikomizue can vary depending on the design and purpose, but typically it ranges from around 80 centimeters (31 inches) to 95 centimeters (37 inches) in overall length.

The Shikomizue was historically used as a discreet and concealed weapon, allowing individuals to carry a sword-like weapon in plain sight without drawing attention. The blade hidden within the cane would typically be around two-thirds the length of the overall cane.

It's important to note that the specific length and design of a Shikomizue can vary depending on the maker, the intended use, and the time period. Some Shikomizue may have longer blades or longer canes, depending on the individual preferences or needs of the user.