To obtain a compass saw with a guide means adjustable by simple manual operation.

In the compass saw wherein a housing 1 and a wear plate 2 are provided in order to process materials of wood, plastics and the like; further a motor driving saw blade holder 3 is provided; furthermore a guide means 5 having an adjusting element 12 and guide shoes 6 opposed separating a distance (a) to each other is provided at the housing 1; a side surface of a saw blade 4 is guided with the guide shoes 6 and at least one guide shoe 6 is made freely movable with the adjusting element 12, at least one guide shoe 6 and the adjusting element 12 are operated in linking with each other by at least one surface of slant surfaces 24 and 25, and a distance (a) between the guide shoes 6 on both sides is varied symmetrically by an action on at least one guide shoe 6 of the adjusting element 12, and appropriately by pulling in a +++ longitudinal direction of a cross section of the saw blade 4.