This transparent center point finding compass (circle finder) is powerful: made of high-quality transparent acrylic, environmentally friendly and durable, clear light transmission; with different diameter holes, versatile, can be applied to woodworking, art and other fields and wood, plastic and other materials; can be used to find the center of the irregularities on the drawing of the circle, to help you find the largest circle of the log, to avoid waste, and to achieve high efficiency in the production; easy to use, wear nails, insert pencils, rotate to draw a circle. Simple to use, put a nail, insert a pencil and rotate it to draw a circle.