1 Tools explanation: Marking Tools

To create a building, process timber (called timber) according to the location of use. It is necessary to measure the length, angle, etc. to process the materials, and to assemble the processed materials, the horizontal and vertical parts of the materials must be viewed. In addition, there is also the work of drawing the measured results and writing symbols (this work is called inking). The tools used in these series of operations are collectively referred to as Marking Tools.

Ink pots, ink sashimi, and curved shaku were also tools for design and drawing at the site, and were important tools that symbolize the advanced skills of carpenters, so they were indispensable as tools to decorate during ceremonies. These traditions are sometimes left as ritual tools in old shrines and temples and traditional companies. Among them, the ritual tools dedicated by the Shogunate Oburyo and Bungo Mamoru Koura, which are handed down to Nikko Toshogu Shrine, are known to be designated as national treasures along with the buildings.

There are various types of Marking Tools, such as ink pots, ink sashimi, and curved shaku, as well as winding, retaining rulers, horizontal instruments, hanging swings, Osasa Ruler, and mouth drawers. These can be broadly divided into tools that measure horizontal and vertical dimensions, tools that measure angles, tools that measure lengths, and tools that transmit curves. Below, we will explain the features individually with photos.