A target ruler made to the Tenchu Shurikenjutsu competition specifications. Simply take a screw or nail, put it through the anchor point into the target face, then draw the circles using the ruler as a guide. These are made specifically to for Sharpe pens. This is a common tool used for marking boards on axe throwing ranges but can be used for log rounds to (We would recommend the Tenchu Stencil though for log roads).
Available is a wide variety of colours.
