The rotary saw is a span saw of approx. 60 cm, very similar to the rip saw but with a narrow blade (1 cm) and relatively wide set teeth so that it can easily follow curved lines. Thanks to the knobs that stop it at both ends, the blade in its frame can be turned in all directions. It can also be detached for insertion through a hole drilled in a shelf. This saw is handled vertically.
See also the ordinary span saw. [MOT]